Surah An-Nisa 4:93

وَمَن يَقْتُلْ مُؤْمِنًا مُّتَعَمِّدًا فَجَزَآؤُهُۥ جَهَنَّمُ خَـٰلِدًا فِيهَا وَغَضِبَ ٱللَّهُ عَلَيْهِ وَلَعَنَهُۥ وَأَعَدَّ لَهُۥ عَذَابًا عَظِيمًا

But whoever kills a believer intentionally - his recompense is Hell, wherein he will abide eternally, and Allāh has become angry with him and has cursed him and has prepared for him a great punishment.

Translation: Saheeh International

Tafsir

And whoever slays a believer deliberately intending to kill him with something that is lethal aware of the fact that he the slain is a believer his requital is Hell abiding therein and God is wroth with him and has cursed him He has removed him from His mercy and has prepared for him a mighty chastisement in the Fire …

Excerpt from Tafsir al-Jalalayn, commentary on 4:93, via Quran.com. The reader has the full commentary and 9 more tafsirs.