(8) باب بُطْلاَنِ بَيْعِ الْمَبِيعِ قَبْلَ الْقَبْضِ
Abu Huraira (Allah be please with him) is reported to have said to Marwan:
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.
Reference: Sahih Muslim 1528 b
In-book reference: Book 21, Hadith 48
USC-MSA web (English) reference(deprecated numbering scheme): Book 10, Hadith 3652