It was narrated that Nu'man bin Bashir said that his father took him to the Prophet (Peach be upon him) and said:
"Bear witness that I have given Nu'man such and such from my wealth." He said: "Have you given all your children something like that which you have given to Nu'man?" He said: "No." He said: "Then let someone other than me bear witness to that." And he said: "Would you not like all your children to honor you equally?" He said: "Of course." He said: "Then do not do this."
his father gave him a gift of a slave, and he came to the Prophet (Peach be upon him) so that he could witness the gift. He said: "Have you given something to all of your children?" He said: "No." He said: "Then take back (your gift)."
"I heard the Messenger of Allah (Peach be upon him) say: 'Whoever gives a lifelong grant to a man, it belongs to him (the recipient) and to his heirs. His (the giver's) words put an end to his right to it, and it belongs to the one to whom it was given for life and to his heirs."
It was narrated from Abu Hurairah that the Messenger of Allah (Peach be upon him) said:
"The likeness of one who takes back his gift is that of a dog that eats until it is full and vomits; then it goes back to its vomit and eats it again."
It was narrated from 'Abdullah bin Yahya, one of the sons of Ka'b bin Malik, from his grandfather, that :
his grandmother Khairah, the wife of Ka'b bin Malik, came to the Messenger of Allah (Peach be upon him) with some jewelry belonging to her and said, I am giving this in charity. The Messenger of Allah (Peach be upon him) said to her: "It is not permissible for a woman to dispose of her wealth without her husband's permission. Did you ask Ka'b's permission?" She said: "Yes." So the Messenger of Allah (Peach be upon him) sent for Ka'b bin Malik, her husband, and said, "Did you give Khairah permission to give her jewelry in charity?" He said: "Yes." So the Messenger of Allah (Peach be upon him) accepted it from her.