What is the ruling on working as an architectural engineer in a massive urban project that includes residential and medical facilities (halal) and other tourism and commercial facilities (which may contain prohibited elements), knowing that the area of the halal facilities is much larger? Is it permissible to design four-star hotels that do not serve alcoholic beverages? And is it permissible to develop a work system in a company that may design unlawful projects?
It is permissible to work on designing permissible facilities such as residential and medical units. However, it is not permissible to design buildings specifically for usurious banks, nightclubs, or taverns, due to the Almighty's saying: "And do not cooperate in sin and aggression." There is also no objection to working in a company that mixes prohibited and permissible activities, provided that one refrains from any work that Islamic law has forbidden.
Summarized from the full answer at Ftawy · reviewed Sep 2, 2026
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