Sayyidah Ayshah (RA) narrated: If Allah’s Messenger (ﷺ) were to conceal anything of the revelation then he would have surely concealed this verse: And (recall) when you (O Prophet) said to him (Zayd ibn Harithah) whom Allah has blessed (with Islam) and to whom you had shown favour (with freedom), “Keep you wife to yourself and fear Allah, and while you were concealing in your mind that which Allah was going to disclose, and you were fearing mankind, whereas Allah has a better right for you to fear Him. So when Zayd had had his want fulfilled of her, we joined her in marriage to you, in order that there should be no blame for the believers in marrying the wives of their adopted sons who have had their want fulfilled of them. And Allah’s commandment is ever performed. (33: 33) When Allah’s Messenger married her, they said, “He has married his son’s wife.” So, Allah revealed: "Muhammad is not the father of anyone of you men, but he is the Messenger of Allah, and the last of the Prophets." (33: 40) Allah's Messenger (ﷺ) had adopted him when he was a young child and he stayed with him till he attained manhood. He was called Zayd bin Muhammad so Allah revealed; "Assert their relationship to their fathers; this is more equitable with Allah; but if you do not know their fathers, then they are your brethren in faith and your friends;" (33:5) Thus (call in this manner) so-and-so friend of so-and-so, and so-and-so brother of so-and-so. “That is more equitable in the sight of Allah. (33: 5) That is, more fair in Allah’s sight.