What is the ruling on benefiting from a sewing machine purchased through installments from the bank, knowing that the bank deducted the installments from the husband's wages without interest, and is this transaction considered impermissible?

This transaction can take several forms: 1. The bank genuinely purchases the machine, then sells it to you in installments. This is permissible (Murabaha sale for the one who commands the purchase). 2. The bank pays the price of the machine on your behalf without interest. If this is conditional on you buying from a store from which the bank receives a commission, then it is impermissible (a loan that brings benefit). If it is free from this condition, then there is no objection. 3. The bank acts as an agent for the seller of the machine in collecting the price. This is permissible, even if the bank takes a fee (agency for a fee).

If the purchase process is carried out in an impermissible manner, the machine is still your property and its income is lawful. However, you must repent to Allah because the loan becomes an obligation upon you and a debt due from you, but you incur sin for dealing with usury.