Will a Muslim be rewarded for selling Islamic products such as the automatic adhan device, prayer beads, and prayer rugs, if he intends thereby to spread good and the remembrance of Allah, and is this more beloved to Allah than selling regular products?

Whoever sells products that aid in obedience to Allah with the intention of spreading good, he is rewarded and thanked for his action, because it involves assisting in righteousness and piety, in accordance with the Almighty's saying: "And cooperate in righteousness and piety," and the Prophet's (peace be upon him) saying: "Indeed, actions are by intentions." Just as promoting evil is forbidden, promoting good is religiously required, and its doer is rewarded.