Narrated Jabir bin 'Abdullah (ra):A boy was born to one of our men, the Ansar, and he wanted to name him Muhammad. Then Ansari man said, "I took the boy to the Prophet (ﷺ). The Prophet (ﷺ) said, "Name your child by my name, but do not name (them) by my Kunya, for I have been made Qasim (i.e., a distributor) to distribute (the booty etc.) amongst you." The narrator, Husain said that the Prophet (ﷺ) said, "I have been sent as a Qasim (i.e., distributor) to distribute (things) amongst you." [The Sub narrator Salim said that he heard Jabir saying that the man wanted to name the boy Al-Qasim, but the Prophet (ﷺ) said, "Call (your sons) by my name, but do not name (them) by my Kunya."]
حَدَّثَنَا أَبُو الْوَلِيدِ، حَدَّثَنَا شُعْبَةُ، عَنْ سُلَيْمَانَ، وَمَنْصُورٍ، وَقَتَادَةَ، سَمِعُوا سَالِمَ بْنَ أَبِي الْجَعْدِ، عَنْ جَابِرِ بْنِ عَبْدِ اللَّهِ ـ رضى الله عنهما ـ قَالَ وُلِدَ لِرَجُلٍ مِنَّا مِنَ الأَنْصَارِ غُلاَمٌ، فَأَرَادَ أَنْ يُسَمِّيَهُ مُحَمَّدًا ـ قَالَ شُعْبَةُ فِي حَدِيثِ مَنْصُورٍ إِنَّ الأَنْصَارِيَّ قَالَ حَمَلْتُهُ عَلَى عُنُقِي فَأَتَيْتُ بِهِ النَّبِيَّ صلى الله عليه وسلم. وَفِي حَدِيثِ سُلَيْمَانَ وُلِدَ لَهُ غُلاَمٌ، فَأَرَادَ أَنْ يُسَمِّيَهُ مُحَمَّدًا ـ قَالَ " سَمُّوا بِاسْمِي، وَلاَ تَكَنَّوْا بِكُنْيَتِي، فَإِنِّي إِنَّمَا جُعِلْتُ قَاسِمًا أَقْسِمُ بَيْنَكُمْ ". وَقَالَ حُصَيْنٌ " بُعِثْتُ قَاسِمًا أَقْسِمُ بَيْنَكُمْ ". قَالَ عَمْرٌو أَخْبَرَنَا شُعْبَةُ عَنْ قَتَادَةَ قَالَ سَمِعْتُ سَالِمًا عَنْ جَابِرٍ أَرَادَ أَنْ يُسَمِّيَهُ الْقَاسِمَ فَقَالَ النَّبِيُّ صلى الله عليه وسلم " سَمُّوا بِاسْمِي وَلاَ تَكْتَنُوا بِكُنْيَتِي ".
Bukhari
One-fifth of Booty to the Cause of Allah (Khumus) • Hadith 23