The Prophet ﷺ forbade plucking out gray hair and said, "It is the light of the Muslim."He said, this is a hasan hadith. It has been narrated by Abdul-Rahman bin Harith and several others from Amr bin Shuayb.
حدثنا هارون بن إسحق الهمداني حدثنا عبدة عن محمد بن إسحق
أن النبي ﷺ نهى عن نتف الشيب وقال إنه نور المسلم قال هذا حديث حسن قد روي عن عبد الرحمن بن الحارث وغير واحد عن عمرو بن شعيب
[hasan] Its chain of transmission, it was also related by Ibn Majah in the book of Manners, chapter on plucking out gray hair, hadith: 3721, from the hadith of Abdah, and Abu Dawud, hadith: 4202, and Nasai: 8/136, hadith: 5071, from the hadith of Amr bin Shuayb through this route, and the hadith has corroborating narrations.