Chapter 34: The Book of 'Umra
(A different chain) from Al-Awza' i, from Az-Zuhri, from 'Urwah and Abu Salamah, from Jabir, who said: "The Messenger of Allah said: 'Umra (a lifelong gift) belongs to the one to whom it was given; it belongs to him and to his descendants, and is inherited by those who inherit from him.'"
Sunan an-Nasa'i 3742