Q: Is there any hadith with reference to the cutting of the underarm hair of a man?
A: There is a Hadeeth in the Hadeeth Book ‘Muslim’ Shareef narrated by Hadhrat Aa’ishah (Radhiyallaahu Anhaa) that removing the hair below the armpits and below the navel is from ‘Al Fitrah’, i.e. from the inherent and natural qualities of man.
The details regarding this are found in the books of Fiqh.
Moulana Yusuf Laher