What is the ruling on working in usurious banks, and does it affect the validity of prayers and good deeds? Is it permissible to remain in this job due to need and to provide for necessities, especially with personal obligations? Is it permissible to borrow from a usurious bank to secure housing?

It is impermissible to work in usurious banks because it constitutes cooperation in sin and aggression, except in cases of dire necessity, in accordance with His, the Exalted, saying: "And He has enumerated for you what He has forbidden to you, except that which you are compelled to." As for remaining in this job until another is found, it has specific rulings.