The Fiqh of Fasting: 6.10 Fasts Which are Makruh

Bismillahir Rahmanir Rahim
In the name of Allah, the Most Beneficent, the Most Merciful

6.10 Fasts Which are Makruh

According to some ‘ulama’, it is makruh to fast only on the day of jumu’ah [when it is not, for example, a part of a three-day fast]. According to Imams Abu Hanifah and Muhammad this is not makruh. (The fatwa of the school is that fasting Friday alone is makruh).

Both the sawm ad-dahr [the lifelong day-after-day fast] and the sawm al-wisal [the unbroken day and night] are makruh. The best of all fats is what is known as the fast of Prophet Dawud, upon whom be peace, which is observed on every other day, with a day of rest in between on the condition that the one doing so is physically able to continue with it indefinitely. The best worship is that which one can do regularly with the community.

The Prophet sal Allahu alayhi wa'sallam said:
"The Muslim is a unique Ummah among the whole of mankind:
Their Land is ONE, their War is ONE, their Peace is ONE,
Their Honour is ONE and their Trust is ONE."
[Ahmad]