Is it permissible to remain in the usurious provident fund and take the amount after retirement and donate its interests, and what is the ruling on the continuation of mandatory deductions even in the case of resignation, and is it obligatory to leave this government job?

It is not permissible for an employee to voluntarily subscribe to funds that invest their money in usurious banks, and they must withdraw from them. However, if the subscription is mandatory, then it is permissible for them to remain in the job, but it is not lawful for them after retirement to take more than the amount of money that was deducted from their salary. Anything in excess of that must be disposed of. The source of the state's money does not affect the permissibility of the job and the salary obtained from it, as the permissibility is based on the work itself.