Is it permissible to take a loan from German banks without interest to pay off debts amounting to 2500 euros, given that the monthly salary of 400 euros from the unemployment center is not enough to pay off these debts, and the person may be forced to borrow from others, taking into account his current health condition that prevents him from working?

If the loan is repaid without an increase, it is permissible, even if the lender deals with usury with others, because the contract in this case is independent. However, if the loan is repaid with an an increase stipulated in the contract, it is forbidden usury and a major sin, and it is not permissible to engage in it except in cases of extreme necessity.