How can shares and subscriptions be made permissible (halal) and free from usury (riba), and is it permissible to sell subscriptions listed on the stock exchange to pay off part of a loan, or to pay off a loan and credit cards through an Islamic bank?

It is not permissible to borrow with interest (riba) to buy shares or anything else, due to the prohibition of riba. Whoever does this must repent to Allah and pay back the principal.

If the shares are pure, there is no need to sell them. However, if they are forbidden or mixed, they must be disposed of.

Whoever buys a permissible item with an interest-based loan must repent to Allah. They are allowed to keep the permissible item and must repay the loan on time, though accelerating the repayment is better.