Sahih al-Bukhari Book 65, Hadith 304
We used not to call Zaid bin Haritha the freed slave of Allah's Messenger (ﷺ) except Zaid bin Muhammad till
the Qu'anic Verse was revealed: "Call them (adopted sons) by (the names of) their fathers. That is
more than just in the Sight of Allah." (33.5)
The Prophet (ﷺ) said, "There is no believer but I, of all the people, I am the closest to him both in this world and in the Hereafter. Recite if you wish: 'The Prophet (ﷺ) is closer to the believers than their own selves.' (33.6) so if a believer (dies) leaves some property then his relatives will inherit that property; but if he is in debt or he leaves poor children, let those (creditors and children) come to me (that I may pay the debt and provide for the children), for them I am his sponsor (surely).
We think that the Verse: 'Among the Believers are men who have been true to their covenant with Allah.' was revealed in favor of Anas bin An-Nadir.