Is a tiny mustache a sign of puberty in boys?

I’m not sure if tiny little moustache hair that’s barely visible on boys considered reaching puberty, I haven’t found about that yet on islamqa. I have a brother who has it but its barely visible he doesn’t show any other signs of puberty that islamqa mentioned from what I know

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@peepso_user_2(RZ)
Walaikumsalam, do you mean interpreting (any) knowledge through the islamic perspective
2 months ago
@peepso_user_1185(AbangPete)
hi there, app not found on Playstore
2 months ago