What is the ruling on working for a company that stores files and documents for other companies and banks, knowing that the work is manual labor in a warehouse?

Storing files for companies that deal in usury and gambling is considered assisting in sin and transgression, which is forbidden, based on the Almighty's saying: (And cooperate in righteousness and piety, but do not cooperate in sin and aggression). This includes any work that aids these banks, even if it is carrying boxes or unloading trucks, for usury is one of the gravest sins. The Prophet, peace and blessings be upon him, cursed the one who consumes usury, the one who feeds it, its scribe, and its two witnesses. The advice for anyone working in this field is to leave it if they cannot avoid dealing with usurious banks.