For he conferred a grant and as such it becomes heritage. and the right of inheritance abrogated his condition.  

أَنَّ رَسُولَ اللَّهِ ﷺ قَضَى فِيمَنْ أُعْمِرَ عُمْرَى لَهُ وَلِعَقِبِهِ فَهِيَ لَهُ بَتْلَةً لاَ يَجُوزُ لِلْمُعْطِي فِيهَا شَرْطٌ وَلاَ ثُنْيَا قَالَ أَبُو سَلَمَةَ لأَنَّهُ أَعْطَى عَطَاءً وَقَعَتْ فِيهِ الْمَوَارِيثُ فَقَطَعَتِ الْمَوَارِيثُ شَرْطَهُ  

"It is undoubtedly his, and it is not permissible for the giver to stipulate any conditions or exceptions." Abu Salamah said: "Because he gave it as a gift and thus, it is subject to the same ruling as the estate, and the condition (that it will revert to the giver on the death of recipient) has become invalid."  

أَنَّ رَسُولَ اللَّهِ ﷺ قَضَى فِيمَنْ أُعْمِرَ عُمْرَى لَهُ وَلِعَقِبِهِ فَهِيَ لَهُ بَتْلَةٌ لاَ يَجُوزُ لِلْمُعْطِي مِنْهَا شَرْطٌ وَلاَ ثُنْيَا قَالَ أَبُو سَلَمَةَ لأَنَّهُ أَعْطَى عَطَاءً وَقَعَتْ فِيهِ الْمَوَارِيثُ فَقَطَعَتِ الْمَوَارِيثُ شَرْطَهُ  

Malik related to me from Ibn Shihab from Abu Salama ibn Abd ar- Rahman ibn Awf from Jabir ibn Abdullah al-Ansari that the Messenger of Allah ﷺ said, "If someone is given a life pension, for him and his posterity, it belongs to the person to whom it has been given. It never reverts to the one who gave it because he gave a gift and the rules of inheritance apply to it."  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ أَيُّمَا رَجُلٍ أُعْمِرَ عُمْرَى لَهُ وَلِعَقِبِهِ فَإِنَّهَا لِلَّذِي يُعْطَاهَا لاَ تَرْجِعُ إِلَى الَّذِي أَعْطَاهَا أَبَدًا لأَنَّهُ أَعْطَى عَطَاءً وَقَعَتْ فِيهِ الْمَوَارِيثُ  

[Machine] That the Messenger of Allah ﷺ had decided regarding a person who was granted a lifespan for himself and his descendants, it is a gift for him in which the giver cannot impose conditions or restrictions. Abu Salamah said: Because he gave a gift and it involved inheritance, so the conditions of the gift were severed. This is the wording of the hadith of Ibn Abi Fudayk, and in the narration of Abdullah: Whoever is granted a lifespan, it is a gift for him and his descendants without any conditions or restrictions. Abu Salamah's opinion is not mentioned.  

أَنَّ رَسُولَ اللهِ ﷺ قَضَى فِيمَنْ أُعْمِرَ عُمْرَى لَهُ وَلِعَقِبِهِ فَهُوَ لَهُ بَتْلَةً لَا يَجُوزُ لِلْمُعْطِي فِيهَا شَرْطٌ وَلَا ثُنْيَا قَالَ أَبُو سَلَمَةَ لِأَنَّهُ أَعْطَى عَطَاءً وَقَعَتْ فِيهِ الْمَوَارِيثُ فَقَطَعَتِ الْمَوَارِيثُ شَرْطَهُ لَفْظُ حَدِيثِ ابْنِ أَبِي فُدَيْكٍ وَفِي رِوَايَةِ عَبْدِ اللهِ مَنْ أُعْمِرَ عُمْرَى فَهِيَ لَهُ وَلِعَقِبِهِ بَتْلًا لَيْسَ لِلْمُعْطِي فِيهَا شَرْطٌ وَلَا شَيْءٌ فَلَمْ يَذْكُرْ قَوْلَ أَبِي سَلَمَةَ