It is narrated from Sayyiduna Abdullah bin Amr bin al-As (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: The example of the person who takes back a gift he has given is like that of a dog who vomits and then licks it up. When the giver of a gift demands its return, he should be made to stand and asked the reason for taking it back, and then the thing he had given as a gift should be returned to him.