Quran Sad 38:86
قُلۡ مَآ أَسۡـَٔلُكُمۡ عَلَيۡهِ مِنۡ أَجۡرٖ وَمَآ أَنَا۠ مِنَ ٱلۡمُتَكَلِّفِينَ ٨٦
Translation
Say, [O Muḥammad], "I do not ask you for it [i.e., the Qur’ān] any payment, and I am not of the pretentious.
قُلۡ مَآ أَسۡـَٔلُكُمۡ عَلَيۡهِ مِنۡ أَجۡرٖ وَمَآ أَنَا۠ مِنَ ٱلۡمُتَكَلِّفِينَ ٨٦
Say, [O Muḥammad], "I do not ask you for it [i.e., the Qur’ān] any payment, and I am not of the pretentious.