عن عمرو بن شعيب عن أبيه عن جده عن النبي صلى الله عليه وسلم قال: لا تنتفوا الشيب فإنه نور المسلم يوم القيامة حديث حسن
Amr ibn Shuayb reported from his grandfather that the Prophet, may Allah bless him and grant him peace, said,
Do not pluck out white hair. It will be the light of a Muslim on the Day of Rising.
[at-Tirmidhi]