ENOfficial
It was narrated from Hisham bin 'Urwah, from his father, from 'Abdullah bin Az-Zubair, that the Messenger of Allah (ﷺ) 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."
Source: sunnah.com
Other translations
Arabic
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 " .
sunnah.com