Q: What are the rewards of doing a fardh kifaya act? For example if there is no Muslim physician,engineer,physiotherapist etc. in a Muslim community (in a region where majority are Muslims compared to kafirs) only kafirs and a single Muslim decides to pursue one of those professions, what is his reward?
A: If the community has non-muslim physicians or engineers then it is no longer a responsibility to practise a fardhe kifaayah.
And Allah Ta’ala (الله تعالى) knows best.
Mufti Ebrahim Salejee (Isipingo Beach)