Sunan an-Nasa'i, Book 44, Hadith 148 (In-Book) ⓘ
It was narrated from 'Abdullah bin 'Umar that the Messenger of Allah said: "Whoever buys food let him not sell it until he has taken possession of it."
أَخْبَرَنَا مُحَمَّدُ بْنُ سَلَمَةَ، قَالَ أَنْبَأَنَا ابْنُ الْقَاسِمِ، عَنْ مَالِكٍ، عَنْ عَبْدِ اللَّهِ بْنِ دِينَارٍ، عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " مَنِ ابْتَاعَ طَعَامًا فَلاَ يَبِعْهُ حَتَّى يَقْبِضَهُ " .
also referenced under: Hadith 4596 (Reference) & Volume 5, Book 44, Hadith 4600 (DarusSalam)