Very weak or denounced — not to be relied upon or attributed to the Prophet ﷺ with certainty.
Narrated 'Aishah [may Allah be pleased with her]:"If the Messenger of Allah (ﷺ) was to have concealed anything that was revealed to him, then he would have concealed these Ayat: 'When you said to him on whom Allah has bestowed grace (meaning by Islam); and you have done a favor (meaning that he was a slave and you freed him) "Keep your wife to yourself, and have Taqwa of Allah." But you did hide in yourself that which Allah will make manifest, you did fear the people whereas Allah had better right that you should fear Him' up to His saying: 'And Allah's command must be fulfilled (33:37).' They said: 'He married his wife's son, so Allah revealed: 'Muhammad is not the father of any of your…