Full Sharh — Sahih Muslim 220
حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا يَحْيَى بْنُ زَكَرِيَّاءَ بْنِ أَبِي زَائِدَةَ، وَأَبُو مُعَاوِيَةَ عَنْ عَاصِمٍ، عَنْ أَبِي عُثْمَانَ، عَنْ سَعْدٍ، وَأَبِي، بَكْرَةَ كِلاَهُمَا يَقُولُ سَمِعَتْهُ أُذُنَاىَ، وَوَعَاهُ، قَلْبِي مُحَمَّدًا صلى الله عليه وسلم يَقُولُ " مَنِ ادَّعَى إِلَى غَيْرِ أَبِيهِ وَهُوَ يَعْلَمُ أَنَّهُ غَيْرُ أَبِيهِ فَالْجَنَّةُ عَلَيْهِ حَرَامٌ " .
English Translation
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
Source
Sahih Muslim(صحيح مسلم)
The Book of Faith
Hadith Number
220