Surah Al-Furqan 25:57

قُلْ مَآ أَسْـَٔلُكُمْ عَلَيْهِ مِنْ أَجْرٍ إِلَّا مَن شَآءَ أَن يَتَّخِذَ إِلَىٰ رَبِّهِۦ سَبِيلًا

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

Tafsir

Say ‘I do not ask of you in return for this that is for delivering that Message with which I have been sent any reward except that whoever wishes to follow a way to his Lord should do so’ by expending his wealth for the sake of attaining God’s pleasure exalted be He; …

Excerpt from Tafsir al-Jalalayn, commentary on 25:57, via Quran.com. The reader has the full commentary and 9 more tafsirs.