Muwatta Malik, Book 26, Hadith 1 (USC-MSA)

Yahya related to me from Zayd ibn Aslam from a man of the Banu Damra that his father said, "The Messenger of Allah, may Allah bless him and grant him peace, was asked about the Aqiqa. He said, 'I do not like disobedience (uquq),' as if he disliked the name. He said, 'If anyone has a child born to him, and wants to sacrifice for his child, then let him do it.' "

حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنْ زَيْدِ بْنِ أَسْلَمَ، عَنْ رَجُلٍ، مِنْ بَنِي ضَمْرَةَ عَنْ أَبِيهِ، أَنَّهُ قَالَ سُئِلَ رَسُولُ اللَّهِ صلى الله عليه وسلم عَنِ الْعَقِيقَةِ فَقَالَ ‏"‏ لاَ أُحِبُّ الْعُقُوقَ ‏"‏ ‏.‏ وَكَأَنَّهُ إِنَّمَا كَرِهَ الاِسْمَ وَقَالَ ‏"‏ مَنْ وُلِدَ لَهُ وَلَدٌ فَأَحَبَّ أَنْ يَنْسُكَ عَنْ وَلَدِهِ فَلْيَفْعَلْ ‏"‏ ‏.‏

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also referenced under: Book 26, Hadith 1070 (In-Book)