Which days are haram to fast?
Approved answer
Days When Fasting is Prohibited
Fasting is not allowed on Eid al-Adha and the three subsequent days, as the Prophet Muhammad stated: "You must not fast on these days; they are meant for feasting, drinking, and remembering Allah," as narrated by Abu Hurairah. Additionally, fasting is also forbidden on Eid al-Fitr. Moreover, it is not permissible to exclusively fast on Fridays, or to designate every Friday for fasting.