Sahih Muslim 10992
In-book no 3715حَدَّثَنِي حَرْمَلَةُ بْنُ يَحْيَى، أَخْبَرَنَا عَبْدُ اللَّهِ بْنُ وَهْبٍ، حَدَّثَنِي عُمَرُ بْنُ مُحَمَّدٍ، عَنْ نَافِعٍ، عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " مَنِ اشْتَرَى طَعَامًا فَلاَ يَبِعْهُ حَتَّى يَسْتَوْفِيَهُ وَيَقْبِضَهُ " .
Ibn 'Umar (Allah be pleased with them) reported Allah's Messenger (ﷺ) as saying: He who bought foodgrain should not sell it until he had taken full possession of it (after measuring it).