Musnad Abu Ya'la al-Mawsili 129:62

Abu Khaythama narrated to us, Hushaym narrated to us, he said: Ali bin Zayd informed us, from Anas, who said: I witnessed the wedding feast of two of the wives of the Prophet, may Allah bless him and grant him peace, and we were not fed bread nor meat. He said: I said, "What was it?" He said: "Al-Hays (a dish made of dates, ghee, and dried yogurt)."