Muhammad bin Muslim bin Tadras محمد بن مسلم بن تدرس أبو الزبير · The Book of Gifts

"The likeness of the one who gives a gift then takes it back, is that of a dog which vomits, then goes back to its vomit and eats it."

"The one who takes back his gift, is like the dog which vomits then goes back to its vomit."

"The Messenger of Allah said: 'The one who takes back his gift, is like the one who goes back to his vomit.'"

"The Messenger of Allah said: 'It is not permissible for anyone to give a gift then take it back, except a father with regard to what he gives to his son. The likeness of the one who gives a gift then takes it back, is that of the dog which eats then when it is full it vomits, then it goes back to its vomit.'"

"It is not permissible for anyone to give a gift then take it back, except a father." Tawus said: "I used to hear the boys say: 'O you who goes back to his vomit!' But I did not realize that the Messenger of Allah had said this as a parable, until we heard that he used to say: 'The likeness of the one who gives a gift then takes it back, is that of the dog which eats its vomit.'"

"Some of those who met the Prophet told us that he said: 'The likeness of the one who gives (something), then takes back his gift, is that of a dog which eats, then vomits, then eats its vomit.'"