It was narrated that Abu Hurairah said:
"The Messenger of Allah (ﷺ) passed by a man who was selling food. He put his hand in it and saw that there was something wrong with it. The Messenger of Allah (ﷺ) said, 'He is not one of us who cheats."'
English reference: Vol. 3, Book 12, Hadith 2224
Arabic reference: Book 12, Hadith 2309