Riyad as-Salihin — Hadith #38808

On the authority of Umm Hani, his sister, daughter of Abi Talib, may God be pleased with her, she said: I went to the Messenger of God, may God bless him and grant him peace, in the year of the conquest, and I found him bathing. When he finished washing, he prayed eight rak’ahs, and that was the sacrifice. (Agreed upon, and this is a summary of the wording of one of Muslim’s narrations)