Surah As-Saf — Ayah 7 (61:7)
وَمَنۡ أَظۡلَمُ مِمَّنِ ٱفۡتَرَىٰ عَلَى ٱللَّهِ ٱلۡكَذِبَ وَهُوَ يُدۡعَىٰٓ إِلَى ٱلۡإِسۡلَٰمِۚ وَٱللَّهُ لَا يَهۡدِي ٱلۡقَوۡمَ ٱلظَّٰلِمِينَ ٧
English translation (Saheeh International)
And who is more unjust than one who invents about Allāh untruth while he is being invited to Islām. And Allāh does not guide the wrongdoing people.
Brief commentary
There is none who is more wrong than the one who makes up lies about Allah when he makes rivals for Him that he worships besides Him, whilst he is called to Islam, the religion of pure monotheism for Allah. Allah does not guide a people who wrong themselves by committing idolatry and sins to that in which lies their rectitude and righteousness.