Sayyidina Ibn Umar (RA) narrated that Sayyidina Umar (RA) got a piece of land in Khaybar. He said, “0 Messenger of Allah, I have acquired property in Khaybar more dear than I have never received, so what do you command me to do with it?” He said, “If you wish, retain the original with yourself and make sadaqah of its profit.” So Umar -‘ made a sadaqah of that. Thus, the land could never be sold, gifted or inherited. Its produce was a sadaqah for the poor, relatives, setting slaves free, the path of Allah, the travellers and the guests. There was no sin on its trustee if he ate something from it in a reasonale manner, or fed a friend, other than hoarding it.
The narrator said that when he narrated the hadith to Muhammad ibn Sirin, he said, instead of meaning, “May not amass wealth for himself.” Ibn Awf said: Another man narrated the hadith to me and he had read the document of endowment inscribed on a red hide and it had the words (other than amassing wealth).
[Muslim 1632]