Passing the Fingers through the Beard While Performing Wudu

Imam Ahmad recorded that Abu Wa'il said, "I saw `Uthman when he was performing Wudu'... When he washed his face, he passed his fingers through his beard three times. He said, `I saw the Messenger of Allah do what you saw me doing.''' At-Tirmidhi and Ibn Majah also recorded this Hadith. At-Tirmidhi said "Hasan Sahih.'' while Al-Bukhari graded it Hasan.