Sahih al-Bukhari 5172
Sahih al-Bukhari · Book 67: Wedlock, Marriage (Nikaah) · Walima of less than one sheep
Narrated Safiyya bint Shaiba:
حَدَّثَنَا مُحَمَّدُ بْنُ يُوسُفَ ، حَدَّثَنَا سُفْيَانُ ، عَنْ مَنْصُورِ ابْنِ صَفِيَّةَ ، عَنْ أُمِّهِ، صَفِيَّةَ بِنْتِ شَيْبَةَ قَالَتْ أَوْلَمَ النَّبِيُّ صلى الله عليه وسلم عَلَى بَعْضِ نِسَائِهِ بِمُدَّيْنِ مِنْ شَعِيرٍ.
The Prophet (ﷺ) gave a banquet with two Mudds of barley on marrying some of his wives. (1 Mudd= 1 3/4 of a kilogram) .