كتاب الآداب
38  
The Book of Manners and Etiquette
(1)
Chapter: The Prohibition Of Taking The Kunyah Abul-Qasim, And The Names Which Are Recommended
(1)
باب النَّهْىِ عَنِ التَّكَنِّي، بِأَبِي الْقَاسِمِ وَبَيَانِ مَا يُسْتَحَبُّ مِنَ الأَسْمَاءِ ‏.‏
Sahih Muslim 2133 c

This hadith has been reported on the authority of Husain With the same chain of transmitters but no mention is made of these words:

" (I have been sent as a distributor), so I distribute amongst you."
حَدَّثَنَا رِفَاعَةُ بْنُ الْهَيْثَمِ الْوَاسِطِيُّ، حَدَّثَنَا خَالِدٌ، - يَعْنِي الطَّحَّانَ - عَنْ حُصَيْنٍ، بِهَذَا الإِسْنَادِ وَلَمْ يَذْكُرْ ‏ "‏ فَإِنَّمَا بُعِثْتُ قَاسِمًا أَقْسِمُ بَيْنَكُمْ ‏"‏ ‏.‏
Reference : Sahih Muslim 2133c
In-book reference : Book 38, Hadith 5
USC-MSA web (English) reference : Book 25, Hadith 5318
  (deprecated numbering scheme)