Sunan an-Nasa'i, Volume 4, Book 34, Hadith 3774 (DarusSalam) ⓘ

It was narrated from Hisham bin 'Urwah, from his father, from 'Abdullah bin Az-Zubair, that the Messenger of Allah said: "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."

أَخْبَرَنِي مُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ عَبْدِ الرَّحِيمِ، قَالَ حَدَّثَنَا عَمْرُو بْنُ أَبِي سَلَمَةَ الدِّمَشْقِيُّ، عَنْ أَبِي عُمَرَ الصَّنْعَانِيِّ، عَنْ هِشَامِ بْنِ عُرْوَةَ، عَنْ أَبِيهِ، عَنْ عَبْدِ اللَّهِ بْنِ الزُّبَيْرِ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ ‏ "‏ أَيُّمَا رَجُلٍ أَعْمَرَ رَجُلاً عُمْرَى لَهُ وَلِعَقِبِهِ فَهِيَ لَهُ وَلِمَنْ يَرِثُهُ مِنْ عَقِبِهِ مَوْرُوثَةٌ ‏" ‏ ‏.‏