وَمَنۡ أَظۡلَمُ مِمَّنِ ٱفۡتَرَىٰ عَلَى ٱللَّهِ كَذِبًا أَوۡ كَذَّبَ بِـَٔايَٰتِهِۦٓۚ إِنَّهُۥ لَا يُفۡلِحُ ٱلظَّٰلِمُونَ ٢١
And who is more unjust than one who invents about Allāh a lie or denies His verses? Indeed, the wrongdoers will not succeed.
Translation: Saheeh International (English)
Each word's meaning and sound
The greatest wrongdoer is the person who attributes a partner to Allah and worships him together with Allah, or the person who denies Allah’s words that He revealed to His Messenger. Those who do wrong by ascribing partners to Allah and denying His verses will never succeed if they do not repent.
Al-Mukhtasar in interpreting the Noble Quran