Al-Adab Al-Mufrad, Hadith 815 ⓘ
Jabir said, "A man had a child and named him al-Qasim. We said, 'We will not give you the kunya Abu'l-Qasim nor will we so honour you. The Prophet, may Allah bless him and grant him peace, was told and said, 'Call your son 'Abdu'r-Rahman.'"
حَدَّثَنَا صَدَقَةُ، قَالَ: حَدَّثَنَا ابْنُ عُيَيْنَةَ، قَالَ: حَدَّثَنَا ابْنُ الْمُنْكَدِرِ، عَنْ جَابِرٍ قَالَ: وُلِدَ لِرَجُلٍ مِنَّا غُلاَمٌ فَسَمَّاهُ: الْقَاسِمَ، فَقُلْنَا: لاَ نُكَنِّيكَ أَبَا الْقَاسِمِ وَلاَ كَرَامَةَ، فَأُخْبِرَ النَّبِيُّ صلى الله عليه وسلم فَقَالَ: سَمِّ ابْنَكَ عَبْدَ الرَّحْمَنِ.
also referenced under: Book 34, Hadith 5 (In-Book) & Book 34, Hadith 815 (English)