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.

حَدَّثَنَا سُلَيْمَانُ بْنُ حَرْبٍ، حَدَّثَنَا حَمَّادٌ، عَنْ ثَابِتٍ، عَنْ أَنَسٍ، قَالَ مَا أَوْلَمَ النَّبِيُّ ﷺ عَلَى شَىْءٍ مِنْ نِسَائِهِ، مَا أَوْلَمَ عَلَى زَيْنَبَ أَوْلَمَ بِشَاةٍ.