What is the ruling on taking a cooperative loan with a simple interest—intended for building or improving a dwelling—that is repaid in installments, and then fully settled upon retirement or death, knowing that the surplus is taken to enable others to obtain the same loan? And is it permissible for me to take this loan, given that I am married, live in a rented home, and face difficult living conditions?

Usurious loans are not permissible except in cases of necessity. The limit of necessity is defined as a situation where there is a fear of harm befalling one's self, limb, honor, mind, or property. Accordingly, it is not permissible to engage in a usurious loan. The fact that interest is taken to enable others to borrow, or is returned upon death or retirement, does not legitimize usury. There are many legitimate means other than usury.