The Messenger of Allah (may Allah's peace and blessings be upon him) forbade fasting the two days: Eid al-Fitr and Eid al-Ad'ha; wearing a garment that is void of openings for hands; sitting on one’s buttocks while holding his both legs pulled back with his arms in case he wore only one garment; and praying after the Fajr and ‘Asr prayers
Abu Sa‘īd al-Khudri (may Allah be pleased with him) reported: The Messenger of Allah (may Allah's peace and blessings be upon him) forbade fasting the two days: Eid al-Fitr and Eid al-Ad'ha; wearing a garment that is void of openings for hands; sitting on one’s buttocks…