Hadith 63 — Sahih Muslim | en.tohed.com

#219 It is reported on the authority of Sa'd bin Abi Waqqas: Both of my ears heard the Messenger of Allah (ﷺ) saying this: He who claimed the fatherhood of anyone else besides his real father knowingly (committed a great sin) ;Paradise is forbidden to him... #220 Sa'd and Abu Bakra (RA) each one of them said: My ears heard and my hearing preserved it that Muhammad (peace and blessings be upon him) observed: He who claimed for another one his fatherhood besides his own father knowingly that he was not his fath...