Sunan an-Nasa'i 3600

Isma'il ibn Mas'ud reported to us: Bishr narrated to us, from Ibn 'Awn. Humayd ibn Mas'adah also informed us: Bishr narrated to us: Ibn 'Awn narrated to us, from Nafi', from Ibn 'Umar, who said: 'Umar acquired land at Khaybar and went to the Prophet (peace and blessings be upon him) for his advice. He said, ‘I have acquired a large tract of land, and I have never acquired wealth more precious to me than it. What do you advise me to do with it?’ He replied, ‘If you wish, you may preserve its principal and give it in charity.’ So he endowed it on condition that it not be sold or given away, and gave its benefits to the poor, relatives, the emancipation of slaves, the cause of Allah, travelers, and guests. There is no blame on its administrator—meaning—if he takes from it or feeds a friend, without accumulating wealth from it. These are Isma'il's words.