Ishaq bin Ibrahim bin Muhammad إسحاق بن إبراهيم بن محمد · The Book of 'Umra

The Messenger of Allah said: "Whoever gives a life-long gift, it belongs to the one to whom he gave it, both during his life and after his death. And do not give things on the basis of Ruqba, for whoever is given something on the basis of Ruqba, it becomes part of his estate."

"I heard the Messenger of Allah say: 'Whoever gives a life-long gift to a man, it belongs to him and to his heirs; his words (when he gave the gift) put an end to his rights over it, and it belongs to the one to whom it was given on the basis of 'Umra, and to his heirs.'"

"Yahya narrated to us that Abu Salamah narrated to him, from Jabir bin 'Abdullah, from the Prophet of Allah who said: 'A lifelong gift belongs to the one to whom it was given.'"

"A lifelong gift ('Umra) is permissible."