Riyad us Saliheen: Hadith 1611

The Messenger of Allah (ﷺ) said, "He who gives something (to someone) as a gift and then gets it back (from him or her) is like a dog which eats its own vomit."

Another narration is: "He who gets back his charity is like a dog which vomits and then returns to that and eats it."

[Al-Bukhari and Muslim].