Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
bayhaqi:19997Abū Ṭāhir al-Faqīh > Abū Bakr al-Qaṭṭān > Aḥmad b. Yūsuf > Muḥammad b. Yūsuf > Dhakar Sufyān > a man > al-Ḥasan > Innamā Summī And Lad al-Zāniyah Shar al-Thalāthah from his mother

[Machine] "To him, you are not your father, whom he is known by, so he killed her and named the worst of the three."  

البيهقي:١٩٩٩٧وَأَخْبَرَنَا 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