Renting the house to him

A: It is not permissible for you to transport mail containing unlawful objects to other people if you know about them as this involves supporting committing sins and transgression. 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. (Part No. 15; Page No. 84) You have to look for another job or move to another branch which does not involve unlawful practices. May Allah facilitate your affairs and may He guide all Muslims to what pleases Him. May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.