Shama-il Tirmidhi Chapter 025, Hadith Number 026 (168).
Hazrat Anas ibn Malik radiyallahu anhu reports, Rasoolullah sallallahu alaihe wasallam celebrated the waleemah of Safiyyah radiyallahu anha with dates and saweeq (sattu).
Saweeq (sattu) is a drink made of parched barley. Sayyidatina Safiyyah bint Huyay ibn Akhtab radiyallahu anha was from a Jewish family and from among the offsprings of Haroon alaihis salaam. In the year AH 7, after the Battle of Khaibar, she was taken as a slave.
Sayyidina Rasoolullah sallallahu alaihe wasallam freed, and married her. Sayyidina Rasoolullah sallallahu alaihe wasallam once said to her, Your grandfather (Haroon alaihis salaam) was a prophet. Your (great) uncle (Musa alaihis salaam) was a prophet, and your husband is a prophet.
The waleemah was made whilst on a journey. What was served in the waleemah? Different sayings are narrated in the ahaadith. In some, it is narrated that hays, which is a type of sweet dish, was served. In some, cheese is mentioned. It is apparent that they were on a journey and whatever was available, at breakfast time, in the possession of Sayyidina Rasoolullah sallallahu alaihe wasallam and his close associates, was included in the waleemah. (Waleemah is a feast normally held on the day after the wedding.)