Jami` at-Tirmidhi 31
جامع الترمذي#31SahihUthman bin Affan narrated that :the Prophet would go through his beard
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirSahih
Al-AlbaniSahih
Bashar Awad MaaroufHasan Sahih
Zubair Ali ZaiIsnaad Hasan
In-book reference: 1:31