(51) باب الْكَيْلِ عَلَى الْبَائِعِ وَالْمُعْطِي
Narrated `Abdullah ibn `Umar:
Allah's Messenger (ﷺ) said, "He who buys foodstuff should not sell it till he is satisfied with the measure with which he has bought it.
Reference: Sahih al-Bukhari 2126
In-book reference: Book 34, Hadith 78
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 3, Book 34, Hadith 336