Respect your elders & appreciate their wisdom & experience. Be mindful of your actions since you are accountable for them even when you are young.

This hadith is about the physical appearance of Prophet Muhammad ﷺ and his age at that time. Abu Juhaifa reported that he saw Allah's Messenger ﷺ having some whiteness in hair at this place, and Zuhair placed one of his fingers at his chin. When asked how old he had been at that time, Juhaifa said he made arrows and put feathers to them which means he was no longer a child. This Hadith teaches us to respect our elders as well as appreciate their wisdom and experience. It also reminds us to be mindful of our actions since we are accountable for them even when we are young.