سنن النسائي

Abu Habibah At-Ta'i said: "A man made a will leaving some Dinars (to be spent) in the cause of Allah. Abu Ad-Darda' was asked about that, and he narrated that the Prophet (ﷺ) said: 'The likeness of the one who frees a slave or gives some charity when he is dying, is that of a man who gives a gift after he has eaten his fill.'"