قُلۡ مَآ أَسۡـَٔلُكُمۡ عَلَيۡهِ مِنۡ أَجۡرٍ إِلَّا مَن شَآءَ أَن يَتَّخِذَ إِلَىٰ رَبِّهِۦ سَبِيلٗا ٥٧
Say, "I do not ask of you for it any payment - only that whoever wills might take to his Lord a way."
Translation: Saheeh International (English)
Each word's meaning and sound
Say, O Messenger: I am not asking for any reward for conveying the message. But anyone of you who wishes to take a path towards Allah’s pleasure by spending, then let him do so.
Al-Mukhtasar in interpreting the Noble Quran