The World Federation One Stop Fiqh

Ruling 1707

Fasting on Eid al-Fiṭr19 and Eid al-Aḍḥā20 is unlawful. Furthermore, if one does not know whether it is the last day of Shaʿbān or the first day of Ramadan and fasts with the intention of it being the first day of Ramadan, it is unlawful.

19  The 1st of Shawwāl.

20  The 10th Dhū al-Ḥijjah.