(27) باب بَيَانِ حَالِ إِيمَانِ مَنْ رَغِبَ عَنْ أَبِيهِ وَهُوَ يَعْلَمُ
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.
Reference: Sahih Muslim 63 b
In-book reference: Book 1, Hadith 126
USC-MSA web (English) reference(deprecated numbering scheme): Book 1, Hadith 121