What is the ruling on taking a loan without usurious interest, when one of its conditions is to provide a pro forma invoice for household electrical goods, knowing that there is no intention of buying these goods and that the loan will be used for other purposes? And what is the solution if it is impermissible?

If the lending institution stipulates an invoice for the purpose of purchasing specific goods, then submitting a fake invoice and spending the amount on something other than what was stipulated is forbidden and impermissible. This is because it is considered a form of deception and fraud, and one must adhere to the condition set by the lending institution.