Volume 7 · Book 62 · Hadith 97
Narrated Anas: The Prophet did not give a better wedding banquet on the occasion of marrying any of his wives than the one he gave on marrying Zainab, and that banquet was with (consisted of) one sheep.
— Sahih Bukhari, Volume 7, Book 62: Wedlock, Marriage (Nikaah), Hadith #97