Answered by Ustadh Tabraze Azam
Question: Is it permissible to use the boar for any purpose, including its hair?
Answer: Wa alaikum assalam wa rahmatullah,
I pray that you are in the best of health and faith, insha’Allah.
A boar takes the ruling of a pig in that it is essentially filthy (najis al-`ayn). [Ibn `Abidin, Radd al-Muhtar]
This is affirmed by numerous explicit Qur’anic texts, such as, “You are forbidden to eat carrion; blood; pig’s meat; any animal over which any name other than God’s has been invoked.” [5.3]
Thus it would not be lawful to use its hairs.
And Allah alone gives success.