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 " .
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." Translation Not Available
Book Ref: Sunan An Nisai Book 34 Hadith 3743
Web Ref: Sunan An Nisai Vol 4 Book 34 Hadith 3774