Sahih Muslim 1528
Sahih Muslim · Book 21: The Book of Transactions · It is invalid to sell goods before taking possession of them
Abu Huraira (Allah be please with him) is reported to have said to Marwan:
حَدَّثَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ ، أَخْبَرَنَا عَبْدُ اللَّهِ بْنُ الْحَارِثِ الْمَخْزُومِيُّ ، حَدَّثَنَا الضَّحَّاكُ، بْنُ عُثْمَانَ عَنْ بُكَيْرِ بْنِ عَبْدِ اللَّهِ بْنِ الأَشَجِّ ، عَنْ سُلَيْمَانَ بْنِ يَسَارٍ ، عَنْ أَبِي هُرَيْرَةَ ، أَنَّهُ قَالَ لِمَرْوَانَ أَحْلَلْتَ بَيْعَ الرِّبَا . فَقَالَ مَرْوَانُ مَا فَعَلْتُ . فَقَالَ أَبُو هُرَيْرَةَ أَحْلَلْتَ بَيْعَ الصِّكَاكِ وَقَدْ نَهَى رَسُولُ اللَّهِ صلى الله عليه وسلم عَنْ بَيْعِ الطَّعَامِ حَتَّى يُسْتَوْفَى . قَالَ فَخَطَبَ مَرْوَانُ النَّاسَ فَنَهَى عَنْ بَيْعِهَا . قَالَ سُلَيْمَانُ فَنَظَرْتُ إِلَى حَرَسٍ يَأْخُذُونَهَا مِنْ أَيْدِي النَّاسِ .
Have you made lawful the transactions involving interest? Thereupon Marwan said: I have not done that. Thereupon Abu Huraira (ﷺ) said: You have made lawful the transactions with the help of documents only, whereas Allah's Messenger (ﷺ) forbade the transaction of foodgrains until full possession is taken of them. Marwan then addressed the people and forbade them to enter into such transactions (as are done with the help of documents). Sulaiman said: I saw the sentinels snatching (these documents) from the people.