Musannaf Ibn Abi Shayba 3:2641

Ibn Idris narrated to us, from Yazid, who said: I said to Abd al-Rahman, "Is there any ghusl (ritual bath) other than on the day of Jumu'ah?" He said, "Yes, the day of al-Adha, the day of al-Fitr, and the day of Arafah."