Sahih Muslim , Book 10, Hadith 3642 (USC-MSA) ⓘ
Ibn Abbas (Allah be pleased with them) reported Allah's Messenger as saying: He who buys food-rain should not sell it until he has taken possession of it. Ibn Abbas (Allah be pleased with them) said: I regard everything like food (so far as this principle is concerned).
حَدَّثَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، وَمُحَمَّدُ بْنُ رَافِعٍ، وَعَبْدُ بْنُ حُمَيْدٍ، قَالَ ابْنُ رَافِعٍ حَدَّثَنَا وَقَالَ الآخَرَانِ، أَخْبَرَنَا عَبْدُ الرَّزَّاقِ، أَخْبَرَنَا مَعْمَرٌ، عَنِ ابْنِ طَاوُسٍ، عَنْ أَبِيهِ، عَنِ ابْنِ عَبَّاسٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " مَنِ ابْتَاعَ طَعَامًا فَلاَ يَبِعْهُ حَتَّى يَقْبِضَهُ " . قَالَ ابْنُ عَبَّاسٍ وَأَحْسِبُ كُلَّ شَىْءٍ بِمَنْزِلَةِ الطَّعَامِ .
also referenced under: Book 21, Hadith 38 (In-Book) & Hadith 1525 (Reference)