Narrated ‘Uthman (rad):

While performing Wudu, the Prophet (ﷺ) would run (his fingers) through his beard. [Reported by At-Tirmidhi and Ibn Khuzaima graded it Sahih].

وَعَنْ عُثْمَانَ ‏- رضى الله عنه ‏- { أَنَّ اَلنَّبِيَّ ‏- صلى الله عليه وسلم ‏-كَانَ يُخَلِّلُ لِحْيَتَهُ فِي اَلْوُضُوءِ } أَخْرَجَهُ اَلتِّرْمِذِيُّ, وَصَحَّحَهُ اِبْنُ خُزَيْمَة َ [1]‏ .‏