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.
Sunan Abi Dawud Book 24, Hadith 79
← Previous Hadith During the time of Messenger of Allah (ﷺ) we used to buy grain, and he sent a man to us who ordered us to move it from the spot where we had bought it to some other place, before we sold it without weighing or measuring it.

Sunan Abi Dawud Book 24, Hadith 78 Next Hadith → The Messenger of Allah (ﷺ) forbade to sell grain which one buys by measurement until one receives it in full.

Sunan Abi Dawud Book 24, Hadith 80