Hushaym narrates: I said to Yazid bin Abi Ziyad: "Is a ritual bath to be taken on any day other than the day of Jumu'ah?" He replied: "Yes! The day of Arafah is a day of Eid; (a ritual bath is to be taken) on the day of Eid al-Fitr, the day of Eid al-Adha, the day of Arafah and the day of Jumu'ah."
Abu Ya'la recorded it; Hushaym and Yazid are both among the narrators of the Sahih.