Fasting: Disapproved FastsPractical Laws of Islam as per the teachings of Ayatullah SistaniRa'iyat al-FikrMay 21, 2026ShareRuling 1715Fasting is disapproved on the Day of ʿĀshūrāʾ[1] and on the day that one doubts is the Day of ʿArafah[2] or Eid al-Aḍḥā.[3]-Ayatullah Sistani, Practical Laws of Islam, Fasting (Sawm)1The 10th of Muḥarram.2The 9th of Dhū al-Ḥijjah.3The 10th of Dhū al-Ḥijjah.