What is the ruling on working at the Real Estate Registration Office, and what is the ruling on registering mortgage contracts for homes that guarantee usurious loans? And does an employee of the Real Estate Registration Office fall under the curse of those who consume usury, those who feed it, those who write it, and those who witness it?

Usurious transactions are forbidden, whether lending or borrowing, due to the severe warning against them. Assisting in such transactions is also not permissible, based on the Almighty's saying: (And cooperate in righteousness and piety, but do not cooperate in sin and aggression). If a usurious loan has not been completed, and its completion depends on the registration of a mortgage, and the registrar knows that it is usurious, then it is not permissible for him to register it, because that would be a forbidden assistance. However, if the loan has already been completed before the registration, there is no harm in registering the mortgage for documentation, because the forbidden contract has already taken place and there is no assistance involved, and because the lender's right to his original capital is established and he has the right to document it.