باب كراهة المشي في نعل واحدة أو خف واحد لغير عذر وكراهة لبس النعل والخف قائمًا لغير عذر
Reported 'Amr bin Shu'aib, on the authority of his father and grandfather that the Prophet (PBUH) said, "Do not pluck out grey hair, for they are the Muslim's light on the Day of Resurrection."
[Abu Dawud, At-Tirmidhi and An- Nasa'i].