﴿ قُلْ مَآ أَسْـَٔلُكُمْ عَلَيْهِ مِنْ أَجْرٍ إِلَّا مَن شَآءَ أَن يَتَّخِذَ إِلَىٰ رَبِّهِۦ سَبِيلًۭا ﴾

“Say: “For this, no reward do I ask of you [- no reward] other than that he who so wills may unto his Sustainer find a way!””

Please check ayah 25:60 for complete tafsir.