Sahih Muslim , Book 8, Hadith 3331 (USC-MSA) ⓘ
Anas (Allah be pleased with him) reported: I did not see Allah's Messenger giving a wedding feast (on the marriage) of any one (of his wives) as he did in the case of (his marriage with) Zainab, for then he sacrificed a goat (on this occasion).
حَدَّثَنَا أَبُو الرَّبِيعِ الزَّهْرَانِيُّ، وَأَبُو كَامِلٍ فُضَيْلُ بْنُ حُسَيْنٍ وَقُتَيْبَةُ بْنُ سَعِيدٍ قَالُوا حَدَّثَنَا حَمَّادٌ، - وَهُوَ ابْنُ زَيْدٍ - عَنْ ثَابِتٍ، عَنْ أَنَسٍ، - وَفِي رِوَايَةِ أَبِي كَامِلٍ سَمِعْتُ أَنَسًا، - قَالَ مَا رَأَيْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم أَوْلَمَ عَلَى امْرَأَةٍ - وَقَالَ أَبُو كَامِلٍ عَلَى شَىْءٍ - مِنْ نِسَائِهِ مَا أَوْلَمَ عَلَى زَيْنَبَ فَإِنَّهُ ذَبَحَ شَاةً .
also referenced under: Book 16, Hadith 106 (In-Book) & Hadith 1428 (Reference)