﴿ قُلْ مَآ أَسْـَٔلُكُمْ عَلَيْهِ مِنْ أَجْرٍۢ وَمَآ أَنَا۠ مِنَ ٱلْمُتَكَلِّفِينَ ﴾

“SAY [O Prophet]: “No reward whatever do I ask of you for this [message]; and I am not one of those who claim to be what they are not.”

Please check ayah 38:88 for complete tafsir.