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:5134Abū Aḥmad al-Mihrajānī > Abū Bakr b. Jaʿfar > Muḥammad b. Ibrāhīm > Ibn Bukayr > Mālik > Yaḥyá b. Saʿīd

[Machine] Because his father was not known.  

البيهقي:٥١٣٤أَخْبَرَنَا أَبُو أَحْمَدَ الْمِهْرَجَانِيُّ أنبأ أَبُو بَكْرِ بْنُ جَعْفَرٍ ثنا مُحَمَّدُ بْنُ إِبْرَاهِيمَ ثنا ابْنُ بُكَيْرٍ ثنا مَالِكٌ عَنْ يَحْيَى بْنِ سَعِيدٍ أَنَّ رَجُلًا كَانَ يَؤُمُّ نَاسًا بِالْعَقِيقِ فَأَرْسَلَ إِلَيْهِ عُمَرُ بْنُ عَبْدِ الْعَزِيزِ فَنَهَاهُ قَالَ مَالِكٌ وَإِنَّمَا نَهَاهُ

لِأَنَّهُ كَانَ لَا يُعْرَفُ أَبُوهُ