Q:
1. A Muslim employee works for an engineering company, and the company is employed to do the engineering (beams, slabs, columns, foundations, etc.) for a temple. The Muslim employee is tasked with designing the structure by his boss. Is it permissible for him to do this?
2. Similarly, if a Muslim owns the engineering company and someone approaches him for this job, can he accept it?
3. What is the ruling if they are not involved in the actual temple, but are working on another building on the same land that has rooms, dormitories, toilets, etc. for the use of occupants of the temple?