عَنْ عَائِشَةَ رَضِيَ اللَّهُ عَنْهَا قَالَتْ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ هُوَ أَشَرُّ الثَّلَاثَةِ إِذَا عَمِلَ بِعَمَلِ أَبَوَيْهِ يَعْنِي وَلَدَ الزِّنَا
Narrated by Sayyidah Aisha (may Allah be pleased with her) that the Noble Prophet (peace and blessings be upon him) said: The child of adultery is the worst among the three when he does the same act as his parents.