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."

عَنِ النَّبِيِّ ﷺ قَالَ لاَ تَرْغَبُوا عَنْ آبَائِكُمْ فَمَنْ رَغِبَ عَنْ أَبِيهِ فَهُوَ كُفْرٌ