Is it permissible to work in a non-Islamic bank, away from loans, if the nature of the work involves reviewing transfers and ensuring their legality, and how should one deal with the salary if it is considered mixed money?

Some scholars believe that working in usurious banks is absolutely impermissible, even if the employee does not directly engage in usurious transactions, due to the general prohibition against cooperating in sin. It is permissible to remain in such work out of necessity, while seeking a permissible alternative. It is permissible to benefit from the money earned if one did not directly engage in usurious transactions. Sheikh Ali Al-Salus cited the hadith that curses the one who consumes usury, its giver, its scribe, and its two witnesses, and he mentioned that working in a usurious bank is not permissible except out of necessity or dire need.