Muhammad bin Ja'far Ghandar محمد بن جعفر غندر صاحب الكرابيس · The Book of 'Umra

"'Umra (a gift given for life) belongs to the heir."

"Any man who gives a lifelong gift to another man, it belongs to him (the recipient) and to his descendants, and to those who inherit from him."

"Any man who is given a gift on the basis of 'Umra, it belongs to him and to his descendants. It belongs to the one to whom he gave it, and it cannot be taken back by the one who gave it, because he has given a gift, and it comes to the heirs of the one to whom it was given."