Sunan an-Nasa’i 3598

It was narrated from Sufyan Ath-Thawri, from Ibn 'Awn, from Nafi', from Ibn 'Umar, from 'Umar, that he said:"I was allocated some land of Khaibar. I came to the Messenger of Allah and said: 'I have acquired some land and I have never acquired any wealth that is dearer to me or more precious than it.' He said: 'If you wish, you can give it in charity.'" So he gave it in charity on condition that it would not be bought or given away, for the poor, relatives, slaves, guests and wayfarers. And there is no sin on the administrator if he eats from it or feeds others on a reasonable basis, with no intention of becoming wealthy from it

It was narrated that Yazid -Ibn Ruzaiq- said:"Ibn 'Awn narrated to us, from Nafi', from Ibn 'Umar, from 'Umar, who said: 'I acquired some land at Khaibar. He came to the Prophet and said: I have acquired some land at Khaibar, and I have never been given any wealth that is more precious to me than it. What do you command me to do with it? He said: If you wish, you can 'freeze' it and give it in charity. So he gave it in charity on condition that it would not be sold, given away or inherited, to the poor, relatives, slaves, for the cause of Allah, guests and wayfarers. There is no sin on the one who administers it if he eats from it on a reasonable basis and feeds his friend, with no intention of becoming wealthy from it

Yunus bin Abi Ishaq narrated that his father said:"I heard 'Amr bin Al-Harith say: 'I saw the Messenger of Allah and he left nothing behind except his white mule, his weapon and some land which he left as a charity