"Umar got some land from Khaibar and said: 'O Messenger of Allah! I got some wealth from Khaibar and I never ever had any wealth as plentiful as it, so what do you order me (to do with it)?' He said: 'If you wish, make it a grant and give charity from it.' So 'Umar gave it in charity: That is not to be sold entirely, nor given away, nor inherited, to be used to produce charity for the needy, those who are near it, for freeing slaves, for the cause of Allah, the wayfarer, the guest, and that there is no harm on its custodian consuming what is customary from it, or eating from its charity, without trying to amass wealth from it."  

يَا رَسُولَ اللَّهِ أَصَبْتُ مَالاً بِخَيْبَرَ لَمْ أُصِبْ مَالاً قَطُّ أَنْفَسَ عِنْدِي مِنْهُ فَمَا تَأْمُرُنِي قَالَ إِنْ شِئْتَ حَبَسْتَ أَصْلَهَا وَتَصَدَّقْتَ بِهَا فَتَصَدَّقَ بِهَا عُمَرُ أَنَّهَا لاَ يُبَاعُ أَصْلُهَا وَلاَ يُوهَبُ وَلاَ يُورَثُ تَصَدَّقَ بِهَا فِي الْفُقَرَاءِ وَالْقُرْبَى وَفِي الرِّقَابِ وَفِي سَبِيلِ اللَّهِ وَابْنِ السَّبِيلِ وَالضَّيْفِ لاَ جُنَاحَ عَلَى مَنْ وَلِيَهَا أَنْ يَأْكُلَ مِنْهَا بِالْمَعْرُوفِ أَوْ يُطْعِمَ صَدِيقًا غَيْرَ مُتَمَوِّلٍ فِيهِ قَالَ فَذَكَرْتُهُ لِمُحَمَّدِ بْنِ سِيرِينَ فَقَالَ غَيْرَ مُتَأَثِّلٍ مَالاً قَالَ ابْنُ عَوْنٍ فَحَدَّثَنِي بِهِ رَجُلٌ آخَرُ أَنَّهُ قَرَأَهَا فِي قِطْعَةِ أَدِيمٍ أَحْمَرَ غَيْرَ مُتَأَثِّلٍ مَالاً قَالَ إِسْمَاعِيلُ وَأَنَا قَرَأْتُهَا عِنْدَ ابْنِ عُبَيْدِ اللَّهِ بْنِ عُمَرَ فَكَانَ فِيهِ غَيْرَ مُتَأَثِّلٍ مَالاً  

"When a person dies, his deeds are cut off except for three: Continuing charity, knowledge that others benefited from, and a righteous son who supplicates for him."  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ إِذَا مَاتَ الإِنْسَانُ انْقَطَعَ عَمَلُهُ إِلاَّ مِنْ ثَلاَثٍ صَدَقَةٌ جَارِيَةٌ وَعِلْمٌ يُنْتَفَعُ بِهِ وَوَلَدٌ صَالِحٌ يَدْعُو لَهُ