Surah Al-Furqan Verse 57

قُلْ مَا أَسْأَلُكُمْ عَلَيْهِ مِنْ أَجْرٍ إِلَّا مَنْ شَاءَ أَنْ يَتَّخِذَ إِلَىٰ رَبِّهِ سَبِيلًا

Say, "I do not ask of you for it any payment - only that whoever wills might take to his Lord a way