Is working in the teaching of Sharia sciences and the Quran more greatly rewarded than working in the teaching of worldly sciences? And is the reward diminished by taking a salary? And is the reward restricted to benefiting Muslims only?

Religious sciences are the greatest and most honorable of sciences, and teaching them is among the best deeds. However, this does not mean preferring them for everyone and in every situation. It might be better for some people to teach beneficial worldly sciences if they are more proficient in them or if there is a great need for them among people. Teaching beneficial worldly sciences is permissible, and the teacher is rewarded for it with the intention of benefiting Muslims and inviting to Allah. The reward varies depending on the extent of benefit and intentions. Every religious science is primarily intended for elevating ranks, and every worldly science needed by the Ummah, such as medicine, agriculture, and industry, falls under this secondarily if the intention is good—that is, benefiting the Islamic Ummah.