(31) باب فِي بَيْعِ الطَّعَامِ قَبْلَ أَنْ يُسْتَوْفَى
Narrated Ibn 'Abbas:
The Messenger of Allah (ﷺ) as saying: If anyone buys grain, he should not sell it until he measures it. Abu Bakr added in his version: I asked Ibn 'Abbas: Why ? He replied: Do you not see that they sell (grain) for gold, but the grain is still with the seller.
Reference: Sunan Abi Dawud 3496
In-book reference: Book 24, Hadith 81
English translation: Book 23, Hadith 3489