Working for a contracting company that deals with Riba
Working for a contracting company that deals with bribes to win bids or undertakes usurious transactions with banks is cooperation in sin (Part No. 23; Page No. 574) and transgression through registering and managing usurious transactions and whatever has to do with Riba (usury/interest) and bribe. Cooperation in any of this is Haram (prohibited), for Allah (Exalted be He) says,
Help you one another in Al-Birr and At-Taqwâ (virtue, righteousness and piety); but do not help one another in sin and transgression. And fear Allâh. Verily, Allâh is Severe in punishment.
It was authentically reported that
the Messenger of Allah (peace be upon him) cursed the devourer (taker) of Riba (usury/interest), its payer, the one who records it and the two witnesses to it, and he said: They are all equal.
Therefore, it is not permissible to take a salary or a percentage for managing usurious transactions and collecting the sums due. He should look for another job that neither involves undertaking nor cooperating in what is Haram (prohibited), in order to keep himself away from what Allah has prohibited and to be keen on getting lawful earning.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.