(43) The Book of Virtues
كتاب الفضائل
(29) Chapter: His Grey Hairs
(29) باب شَيْبِهِ صلى الله عليه وسلم ‏.‏
Sahih Muslim 2341 f 

This hadith has been narrated on the authority of Muthanna through the same chain of transmitters.

وَحَدَّثَنِيهِ مُحَمَّدُ بْنُ الْمُثَنَّى، حَدَّثَنَا عَبْدُ الصَّمَدِ، حَدَّثَنَا الْمُثَنَّى، بِهَذَا الإِسْنَادِ ‏.‏
Reference : Sahih Muslim 2341f
In-book reference : Book 43, Hadith 136
USC-MSA web (English) reference : Book 30, Hadith 5783
  (deprecated numbering scheme)