Arabic (Original)
وَأَخْبَرَنَا أَبُو طَاهِرٍ الْفَقِيهُ أنبأ أَبُو بَكْرٍ الْقَطَّانُ ثنا أَحْمَدُ بْنُ يُوسُفَ ثنا مُحَمَّدُ بْنُ يُوسُفَ قَالَ ذَكَرَ سُفْيَانُ عَنْ رَجُلٍ عَنِ الْحَسَنِ قَالَ إِنَّمَا سُمِّيَ وَلَدُ الزَّانِيَةِ شَرَّ الثَّلَاثَةِ؛ أَنَّ أُمَّهُ قَالَتْ لَهُ لَسْتَ لِأَبِيكَ الَّذِي تُدْعَى بِهِ فَقَتَلَهَا فَسُمِّيَ شَرَّ الثَّلَاثَةِ
English Translation
Al-Hasan said: The child of the adulteress was called the worst of the three because his mother told him he was not the son of the man he was attributed to, so he killed her. Thus he was called the worst of the three.