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.
عَنْ سَعْدٍ وَأَبِي بَكْرَةَ كِلاَهُمَا يَقُولُ سَمِعَتْهُ أُذُنَاىَ وَوَعَاهُ قَلْبِي مُحَمَّدًا ﷺ يَقُولُ مَنِ ادَّعَى إِلَى غَيْرِ أَبِيهِ وَهُوَ يَعْلَمُ أَنَّهُ غَيْرُ أَبِيهِ فَالْجَنَّةُ عَلَيْهِ حَرَامٌ