Sunan Ibn Majah Book 15, Hadith 6
“A man came to the Prophet (ﷺ) and said: 'I gave my mother a garden of mine, and she has died and has no other heir but me.' The Messenger of Allah(ﷺ) said: 'Your charity is valid and your garden has been returned to you.' ”
“A woman came to-the Prophet (ﷺ) and said: 'O Messenger of Allah (ﷺ), I gave my mother a slave girl of mine, and she has died.' The Messenger of Allah (ﷺ) said: 'Allah (SWT) has rewarded you, and returned to you your inheritance (without your seeking that.' ”
“Umar bin Khattab acquired some land at Khaibar, and he came to the Prophet (ﷺ) and consulted him. He said: 'O Messenger of Allah(ﷺ), I have been given some wealth 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 make it an endowment and give (its produce) in charity.' So 'Umar gave it on the basis that it would not be sold, given away or inherited, and (its produce) was to be given to the poor, to relatives, for freeing slaves, in the cause of Allah, to way fares and to guests; and there was nothing wrong if a person appointed to be in charge of it consumed from it on a reasonable basis or feeding a fried, without accumulating it for himself.”