Saad 86

قُلْ مَآ أَسْـَٔلُكُمْ عَلَيْهِ مِنْ أَجْرٍ وَمَآ أَنَا۠ مِنَ ٱلْمُتَكَلِّفِينَ ﴿٨٦﴾

Qul ma asalukum AAalayhi min ajrin wama ana mina almutakallifeena

Say (O Muhammad SAW): "No wage do I ask of you for this (the Quran), nor am I one of the Mutakallifun (those who pretend and fabricate things which do not exist). The Noble Quran