Surah An-Nisa — Ayah 116 (4:116)
إِنَّ ٱللَّهَ لَا يَغۡفِرُ أَن يُشۡرَكَ بِهِۦ وَيَغۡفِرُ مَا دُونَ ذَٰلِكَ لِمَن يَشَآءُۚ وَمَن يُشۡرِكۡ بِٱللَّهِ فَقَدۡ ضَلَّ ضَلَٰلَۢا بَعِيدًا ١١٦
English translation (Saheeh International)
Indeed, Allāh does not forgive association with Him, but He forgives what is less than that for whom He wills. And he who associates others with Allāh has certainly gone far astray.
Brief commentary
Allah does not forgive the crime of associating partners with Him, for anyone who does so and dies in that state will live eternally in the fire of Hell. He may forgive all other sins besides associating partners with Him for whomever He wills if such people die committing those sins without repentance, out of His mercy and grace. Whoever associates anything as a partner with Allah has gone far away from the truth, as he has made the creation equal with the Creator.