صحيح مسلم 220

Sa'd and Abu Bakra 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 father-to him Paradise is forbidden

Rapporté par Sa'd et Abu Bakra رضي الله عنهما : Chacun d’eux a dit : Mes oreilles ont entendu et ma mémoire a retenu que Muhammad ﷺ a dit : Celui qui revendique pour un autre la paternité alors qu’il sait que ce n’est pas son père, le Paradis lui est interdit