Musnad Ahmad 32:1081

Hashim ibn al-Qasim narrated to us, Sulayman narrated to us, from Thabit, from Anas, who said: I have seen a wedding feast for the Messenger of Allah, may Allah bless him and grant him peace, in which there was neither bread nor meat. He said: Safiyyah was assigned to Dihyah al-Kalbi in his share, so they began to praise her, and he mentioned the rest of its meaning.