Sunan Ibn Majah Book 15, Hadith 3

he gave a horse in charity at the time of the Messenger of Allah (ﷺ), then he saw its owner selling it for a low price. He went to the Prophet (ﷺ) and asked him about that, and he said: “Do not buy what you gave in charity.”

Previous Hadith

“The likeness of the one who gives charity then takes it back is that of a dog who vomits then goes back and eats its vomit.”

Sunan Ibn Majah Book 15, Hadith 2
Next Hadith

he gave a horse called Ghamr or Ghamrah to someone, then he saw one of its colts or fillies attributed to his horse being sold, but he refrained from (buging) it.

Sunan Ibn Majah Book 15, Hadith 4