(31) باب فِي بَيْعِ الطَّعَامِ قَبْلَ أَنْ يُسْتَوْفَى
Ibn 'Umar said:
They (the people) used to buy grain in the upper part of the market in the same spot without measuring or weighing it. The Messenger of Allah (ﷺ) forbade them to sell it there before removing it.
Reference: Sunan Abi Dawud 3494
In-book reference: Book 24, Hadith 79
English translation: Book 23, Hadith 3487