Can I borrow money from my home equity line of credit to go for my wajib hajj?
Yes, you can, but it will not count as a wajib (obligatory) hajj but a mustahab (recommended) haj. Note, it is not your obligation to take out from a line of credit or a loan to go to hajj. If you are financially unable to go, or are financially able but you would lose your job when you return, or you would not have enough money to support yourself or your family by going to hajj then it is not obligatory upon you.