The Book of Transactions
21/8. Chapter:
It is invalid to sell goods before taking possession of them
Sahih Muslim
حَدَّثَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، أَخْبَرَنَا رَوْحٌ، حَدَّثَنَا ابْنُ جُرَيْجٍ، حَدَّثَنِي أَبُو الزُّبَيْرِ، أَنَّهُ سَمِعَ جَابِرَ بْنَ عَبْدِ اللَّهِ، يَقُولُ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم يَقُولُ " إِذَا ابْتَعْتَ طَعَامًا فَلاَ تَبِعْهُ حَتَّى تَسْتَوْفِيَهُ " .
Jabir b. Abdullah (Allah be pleased with them) reported Allah's Messenger (ﷺ) as saying: When you purchase foodgrains, do not sell them until you have taken possession of them.
Reference : Sahih Muslim 1529In-book reference : Book 21, Hadith 49USC-MSA web (English) reference : Book 10, Hadith 3653