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 ﷺ 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 ﷺ فَقَالَ: سَمِّ ابْنَكَ عَبْدَ الرَّحْمَنِ.