Sahih al-Bukhari, Book 67, Hadith 107 (In-Book) ⓘ
Narrated Safiyya bint Shaiba: The Prophet gave a banquet with two Mudds of barley on marrying some of his wives. (1 Mudd= 1 3/4 of a kilogram).
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.
also referenced under: Hadith 5172 (DarusSalam) & Volume 7, Book 62, Hadith 101 (USC-MSA)