Hajjaj narrated from Abu Az-Zubair, from Tawus, from Ibn 'Abbas, who said: "The Messenger of Allah said: 'Umra (life-long gift) is permissible for the one to whom it is given, and Ruqba is permissible to the one to whom it is given, and the one who takes back his gift is like the one who goes back to his vomit'."
The Prophet Muhammad ﷺ was teaching us how important it is to show good character when giving or receiving something from someone else. He was reminding us that generosity should be shown when gifting something as well as being thankful for what we have been given by others without expecting anything in return. We should also remember not to take back any gifts once they have been given away as this shows bad manners and character which goes against Islamic teachings.