Sahih al-Bukhari 6768
Sahih al-Bukhari · Book 85: Laws of Inheritance (Al-Faraa'id) · Whoever claims to be the son of a person other than his father
Narrated Abu Huraira:
حَدَّثَنَا أَصْبَغُ بْنُ الْفَرَجِ ، حَدَّثَنَا ابْنُ وَهْبٍ ، أَخْبَرَنِي عَمْرٌو ، عَنْ جَعْفَرِ بْنِ رَبِيعَةَ ، عَنْ عِرَاكٍ ، عَنْ أَبِي هُرَيْرَةَ ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " لاَ تَرْغَبُوا عَنْ آبَائِكُمْ، فَمَنْ رَغِبَ عَنْ أَبِيهِ فَهُوَ كُفْرٌ " .
The Prophet (ﷺ) said, "Do not deny your fathers (i.e. claim to be the sons of persons other than your fathers), and whoever denies his father, is charged with disbelief."