The Prophet (ﷺ) said, “(Allah said), ‘Every good deed of Adam’s son is for him except fasting; it is for Me. and I shall reward (the fasting person) for it.’ Verily, the smell of the mouth of a fasting person is better to Allah than the smell of musk.” 

Sahih al-Bukhari 

Fasting (Sawm) is an important pillar of Islam. It’s a beloved act of worship, as it shows our gratitude towards Allah (SWT) for the provisions he’s given us.  

Most of us know fasting is mandatory during Ramadan. But did you know there are other times when it’s highly recommended?  

There are additional days in the year when it’s encouraged to fast. An opportunity to gain extra reward for following the Sunnah, the actions and words of our Prophet (ﷺ).  

There are also days when we cannot fast, as it is haram (forbidden) or makruh (extremely disliked) to do so. 

Hence, it’s important to know which days we can fast to prepare for them in advance. 

Days of Fasting Outside of Ramadan 

There are several days in the Islamic Calendar when it’s sunnah (highly recommended) to fast. As the Hijri year follows the moon’s cycle, the dates of these days on the conventional Western calendar change every year.  

Mondays and Thursdays  

The Prophet Muhammad (ﷺ) would fast on Mondays and Thursdays. The reasons for why can be found in several ahadith.  

“O Messenger of Allah, why do you fast on Mondays and Thursdays?” He (ﷺ) said: “On Mondays and Thursdays Allah forgives every Muslim except two who have forsaken one another.”

Sunan Ibn Majah

“The Messenger of Allah (ﷺ) said, “The deeds are presented on Monday and Thursday. Thus, I love for my deeds to be presented while I am fasting.” 

Tirmidhi

The Prophet (ﷺ) was asked about fasting on Monday. The Prophet said, “That is the day I was born and the day I was sent with revelation.”

 Sahih Muslim

There are also several health benefits that come with fasting two times a week. These include, but are not limited to, reduced levels of total cholesterol and lowered risk factors for heart disease.  

Six Days in Shawwal  

Shawwal is the 10th Islamic month. It is the month that follows Ramadan, as the first of Shawwal is Eid al-Fitr.

The rewards for fasting six days in Shawwal alongside Ramadan are great – as if one has fasted for the entire year!

The Messenger of Allah (ﷺ) said, “Whoever fasts the month of Ramadan and then follows it with six days of fasting in the month of Shawwal, it will be as if he has fasted for the entire year.”

 Sahih Muslim

These six days can be spread out throughout the month. It also does not have to be consecutive days.  

The only day of Shawwal you are not allowed to fast is Eid al-Fitr. This is because it is forbidden to fast on the days of Eid.  

“The Messenger of Allah (ﷺ) forbade fasting on the Day of Fitr and the Day of Adha.” 

Sunan Ibn Majah

First 9 Days of Dhul Hijjah, Especially Arafah

Dhul Hijjah is the twelfth and final month of the Islamic Calendar. The first ten days of the month are extremely blessed, for “there are no days during which righteous deeds are more beloved to Allah than these days.” (Sunan Ibn Majah)

One of the best deeds to do is to fast. Hence, on the first 9 days (as one cannot fast on Eid Al-Adha) it is recommended for us to fast, alongside doing other good deeds, such as reading Qur’an, making dhikr, giving charity and performing nafl (voluntary) prayers.

Fasting in Dhul Hijjah is also sunnah, as the Messenger of Allah (ﷺ) used to fast the month’s first nine days. (Sunan Abi Dawud) 

He (ﷺ) especially encouraged it on the Day of Arafah, the 9th of Dhul Hijjah. It is also the most blessed day of the year. This is because fasting on the day of Arafah “will expiate the sins of the previous and upcoming years.” (Sahih Muslim)

However, for those going on Hajj, it is fine for them to leave the sunnah fast of Arafah.

One of the companions of the Prophet (ﷺ), Ibn Umar, noted that, while performing the pilgrimage, the Prophet (ﷺ) did not fast during Arafat.

In turn, some of the closest companions of the Prophet (ﷺ) – Abu Bakr, Umar and Uthman (may peace be upon them all) – also did not fast on Arafat while on Hajj. (Tirmidhi)  

Hence, fasting on the first 9 days of Dhul Hijjah, especially on Arafah, is a highly recommended act for those not on Hajj.

Ashura (and the Day Before or After it)  

Ashura occurs on the 10th of Muharram, the first Islamic month. It is a blessed day that commemorates several significant events in Islamic history.  

The origins of fasting on Ashura have been documented in this hadith collected by Al-Bukhari and Muslim and reported by Ibn ‘Abbas (RA). The narration goes as follows:  

The Prophet (ﷺ) observed the Jewish people fasting on this day and asked why they did so. The Jews replied that this was the day Allah (SWT) granted victory to Musa (AS) and Bani Isra’il over Fir’aun (Pharaoh). Thus, they fasted on this day out of respect.  

The Prophet (ﷺ) then said, “We are closer to Musa (AS) than you,” and enjoined in fasting on that day.  

There are also great blessings for fasting on Ashura. When asked about fasting on the 10th of Muharram, the Prophet (ﷺ) said, “It will expiate the sins of the past year.” (Sahih Muslim)

It is also recommended to fast the day before Ashura (9th Muharram). Ibn ‘Abbas (RA) reported:

“When the Messenger of Allah (ﷺ) fasted on the day of ‘Ashura and told the people to fast, they said, “O Messenger of Allah, this is a day that is venerated by the Jews and Christians.” The Messenger of Allah (ﷺ) said, “Next year, if Allah wills, we will fast on the ninth day.” But by the time the following year came, the Messenger of Allah (ﷺ) had passed away.   

Sahih Muslim

Thus, to differentiate Muslims from other religions (who also celebrated this day), the Prophet (ﷺ) instructed us to fast on the 9th and 10th of Muharram.   

If one fears they may miss Ashura because of the difference in moon sighting, then scholars also permit fasting on the 10th and 11th of Muharram.   

Most of Sha’ban  

As the 8th Islamic month, Sha’ban is the month before Ramadan. The Prophet fasted for the majority of this month, with accounts of it recorded in several ahadith. This includes a hadith where ‘Aisha (RA) said:

“The Messenger of Allah (ﷺ) would fast until we said he will never break his fast, and he would not fast until we said he would never fast. I did not see the Prophet complete an entire month of fasting except for Ramadan, and I did not see him complete more voluntary fasts than in the month of Sha’ban.”

Bukhari and Muslim

In another hadith, ‘Aisha (RA) also said, “The most beloved month to the Messenger of Allah (ﷺ) for fasting was Sha’ban, then he would connect it with Ramadan.” (Sunan Abi Dawud)

Exceptions to Fasting in Sha’ban 

In a hadith collected by Al-Bukhari and Muslim, ‘Aisha (RA) also reported that the Prophet (ﷺ) observed fasting during the whole month of Sha’ban except for a few days. 

Abu Hurayrah (RA) similarly mentioned that the Messenger of Allah (ﷺ) said:

“Do not anticipate Ramadan by fasting one or two days before it begins, but if a man habitually fasts, then let him fast.” 

Sahih Muslim

Abu Hurayrah (RA) also reported that the Prophet (ﷺ) said to not fast if Sha’ban is half over. (Tirmidhi)  

The exception to this would be someone who fasted regularly, such as the Prophet (ﷺ) and many of his companions. Thus, if you are someone who regularly observes the sunnah fast, then you may still observe them in the second half of Sha’ban.  

It is also permissible to make up a Ramadan fast at this time, if necessary. ‘Aisha (RA), one of the wives of the Prophet (ﷺ), herself would make up her fast in Sha’ban. Regarding this, she said, “I had to make up some fasts I missed during the month of Ramadan, but I was unable to do so until the month of Sha’ban as I was busy with the Messenger of Allah (ﷺ).” (Bukhari and Muslim)

The White Days  

The white days are the 13th, 14th and 15th of each Islamic month. They are called White Days (Ayam al Beedh) as the moon is most lit on these nights.  

Qatadah Ibn Malhan al-Qaysi said that the Prophet (ﷺ) used to command them to fast the days of the White (nights). He (ﷺ) said that to fast these days “is like keeping perpetual fast.” (Sunan Abi Dawud)

In another hadith, Jarir bin ‘Abdullah recalled that the Prophet (ﷺ) said:

“Fasting three days of each month is fasting for a lifetime, and the shining days of Al-Bid, the thirteenth, fourteenth and fifteenth.”

Sunan An-Nasai  

Are There Days Muslims Cannot Fast? 

Generally, most days of the year should be okay for you to fast. The exceptions are the two days of Eid and the days of Tashreeq. It is also severely disliked for one to fast on Fridays, Saturdays and towards the end of Sha’ban unless it falls on a day they regularly fast.  

Days of Celebration 

As mentioned before, it is forbidden to fast on Eid al-Fitr and Eid al-Adha. These Islamic celebrations have been designated for us to enjoy and feast with loved ones. 

Similarly, it is also forbidden to fast on the days of Tashreeq, three days after Eid al-Adha. This is because these are “days of eating, drinking and remembering Allah.” (Sahih Muslim) 

However, there is an exception. In one hadith, ‘Aisha (RA) and Ibn ‘Umar (RA) reported:

“No concession was granted allowing anyone to fast on the days of al-Tashreeq, except for the (pilgrim) who could not find a sacrificial animal.” 

Al-Bukhari

Hence, those on Hajj who are unable to perform the sacrifice for Eid Al-Adha are permitted to fast on the days of Tashreeq.  

Fridays and Saturdays 

It is severely disliked to fast on Friday alone. The Prophet (ﷺ) said, “No one of you should fast on Friday, unless he fasts (a day) before it or after it.” (Sahih Al Bukhari)  

This is because Friday (called Jumuah or Jummah in Arabic) is a dedicated day of worship. As fasting can make one easily tired, it may prevent them from making the most of Jumuah.  

Similarly, it is also discouraged to fast on a Saturday. The Prophet (ﷺ) said:

“Do not fast on Saturday except for what has been made obligatory upon you (by Allah). If one of you does not find but a grape peal or a tree’s twig, then let him chew it.” 

Sunan Abi Dawud

Fasting on Saturday may also cause one to resemble the practice of the Jewish people, as they observe Saturday as a day of rest.  Another reason why the Prophet (ﷺ) advised against it unless fasting was necessary.

Exceptions to Avoiding Fasting on Friday or Saturday 

Obviously, one must fast on Friday and Saturday if it falls in the month of Ramadan. It is also permissible to fast on these days if it happens to fall on a day when it is sunnah to fast, such as Arafah, Ashura or one of the White Days. 

You may also make up a fast from Ramadan on Friday or Saturday if this is the only time you can fast. But it is better to combine it with another day if you can.  

Differences between Voluntary Fasting and Fasting in Ramadan

The rulings on what breaks a fast outside of Ramadan and during Ramadan are the same. However, there are two key differences. 

When to Make the Intention  

The Prophet (ﷺ) said, “Whoever does not have the intention to fast before dawn, there is no fasting for him.” 

According to At-Tirmidhi, the hadith specifically refers to fasting in Ramadan. The fast is invalid if the intention is not made before sunrise in Ramadan. This also extends to when one is making up a Ramadan fast or fasting for a vow.  

However, for voluntary fasting, it is permissible to make an intention after morning, in the opinion of Al-Shafi’i, Ahmad, and Ishaq. 

Leaving the Fast 

During Ramadan, you must remain fasting from dawn to dusk. Even if you have a valid excuse to break it, you must make up the full day you missed outside of Ramadan. Or, if you are unable to fast, pay compensation (fidyah) for it.  

However, for a voluntary fast, you can break the fast if you wish without sin. As it is voluntary, you don’t need to make up the fast later or pay compensation if you miss it.  

There was a time when the Prophet (ﷺ) received an invitation to a feast (outside of Ramadan) but one of the companions was fasting. The Prophet (ﷺ) then requested,

“Your brother has invited you and incurred expenses on your behalf, break your fast and fast another day in its place if you wish.”

Ahmad

 

May Your Sunnah Fasting Be Accepted by Allah (SWT) 

All in all, there are several specific voluntary fasts recommended for Muslims to do outside of Ramadan. These are:  

• Mondays and Thursdays 
• Six days in Shawwal (except Eid Al-Fitr) 
• First 9 days of Dhul Hijjah (especially the 9th, Arafah) 
• Ashura (10th Muharram) – if possible, combined with either the 9th or 11th Muharram 
• Most of Shaban 
• The White Days (13th, 14th and 15th of each Islamic month)

If we can fast continually during Ramadan, then we already have the mental mindset to fast some or even all these voluntary days.  

In this new Hijri year, let us make the intention to perform as many of these fast as possible! May Allah (SWT) grant us the strength to observe these days and accept our fasts, ameen!