The Book of Manners and Etiquette
38/1. Chapter:
The Prohibition Of Taking The Kunyah Abul-Qasim, And The Names Which Are Recommended
Sahih Muslim
حَدَّثَنَا عَمْرٌو النَّاقِدُ، وَمُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ نُمَيْرٍ، جَمِيعًا عَنْ سُفْيَانَ، قَالَ عَمْرٌو حَدَّثَنَا سُفْيَانُ بْنُ عُيَيْنَةَ، حَدَّثَنَا ابْنُ الْمُنْكَدِرِ، أَنَّهُ سَمِعَ جَابِرَ بْنَ عَبْدِ اللَّهِ، يَقُولُ وُلِدَ لِرَجُلٍ مِنَّا غُلاَمٌ فَسَمَّاهُ الْقَاسِمَ فَقُلْنَا لاَ نَكْنِيكَ أَبَا الْقَاسِمِ وَلاَ نُنْعِمُكَ عَيْنًا . فَأَتَى النَّبِيَّ صلى الله عليه وسلم فَذَكَرَ ذَلِكَ لَهُ فَقَالَ " أَسْمِ ابْنَكَ عَبْدَ الرَّحْمَنِ " .
Jabir b. 'Abdullah reported: A child was born in the house of a person amongst us, and he gave him the name of Qasim. We said: We will not allow you (to give the name) to your child as Qasim (and thus adopt the kunya of Abu'l-Qasim) and coal your eyes. He (that person) came to Allah's Apostle (ﷺ) and made a mention of that to him, whereupon he said: Call your son 'Abd al-Rahman.
Reference : Sahih Muslim 2133hIn-book reference : Book 38, Hadith 10USC-MSA web (English) reference : Book 25, Hadith 5323