Question

المفعول لِأجْلِهِ or المفعول لَهُ is a مصدر which tells us the reason for doing an action.

Accepted Answer

لم أخرُجْ خوفاً من المطر (I didn't go out for fear of rain)↑Here مصدر is خوفاً which tells us the reason for not going out.

Text	المفعول لِأجْلِهِ or المفعول لَهُ is a مصدر which tells us the reason for doing an action.
Back Extra	لم أخرُجْ خوفاً من المطر (I didn't go out for fear of rain) ↑ Here مصدر is خوفاً which tells us the reason for not going out.

المفعول مصدر Tells Reason خوفاً لِأجْلِهِ لَهُ Action