Prohibition of Plucking Grey Hairs

Grey hair, the Prophet (peace be upon him) taught elsewhere, is a light for the believer on the Day of Resurrection, so this chapter warns against tearing it out in a chase after a younger look. The single hadith here does not name grey hair at all, which tells you something: an-Nawawi places it under this heading because the deeper issue is not the hair but the impulse behind it, reshaping ourselves to a standard Allah never set.

The Arabic word to sit with is shayb, the greying that comes with age and dignity. Notice how the chapter reaches for a broad principle rather than a narrow ruling: anything we introduce into the religion, or any quiet contempt for the way Allah has made us, is measured against what He and His Messenger actually gave us. The fine points of grooming belong to the scholars; the heart-lesson is contentment with how He has fashioned you.