Answered by Shaykh Abu Usamah
Why do we have to cut our pubic hair and armpit hair? Do we have to keep doing it?
The hair within the pubic area and armpits should be removed. It is disliked to leave this till the hair becomes long.
It is recommended that this be done weekly, ideally on Friday (before the Friday prayer). It is not disliked if this done at least once every 15 days. It is blameworthy if not done within 15 days, and sinful beyond 40 days.
[Tahtawi, Hashiyat al-Tahtawi `ala al-Maraqi al-Falah]
The wisdom behind this law of the Shari`a is apparently cleanliness. However as with all other laws of the Shari`a this is merely according to our understanding. There may be many other wisdoms that we are unaware of. The law has to be carried out – even if the wisdom is not understood.
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