وَمَنۡ أَظۡلَمُ مِمَّنِ ٱفۡتَرَىٰ عَلَى ٱللَّهِ ٱلۡكَذِبَ وَهُوَ يُدۡعَىٰٓ إِلَى ٱلۡإِسۡلَٰمِۚ وَٱللَّهُ لَا يَهۡدِي ٱلۡقَوۡمَ ٱلظَّـٰلِمِينَ
Wa man azlamu mimma nif taraa 'alal laahil kaziba wa huwa yad'aaa ilal Islaam; wallaahu laa yahdil qawmaz zaalimeen
English Translation
And who is more unjust than one who invents about Allah untruth while he is being invited to Islam. And Allah does not guide the wrongdoing people
— Saheeh International