النساۤء — An-Nisa' Ayat 93
وَمَنْ يَّقْتُلْ مُؤْمِنًا مُّتَعَمِّدًا فَجَزَاۤؤُهٗ جَهَنَّمُ خَالِدًا فِيْهَا وَغَضِبَ اللّٰهُ عَلَيْهِ وَلَعَنَهٗ وَاَعَدَّ لَهٗ عَذَابًا عَظِيْمًا
Wa may yaqtul mu'minam muta‘ammidan fa jazā'uhū jahannamu khālidan fīhā wa gaḍiballāhu ‘alaihi wa la‘anahū wa a‘adda lahū ‘ażāban ‘aẓīmā(n).
"But whoever kills a believer intentionally - his recompense is Hell, wherein he will abide eternally, and Allah has become angry with him and has cursed him and has prepared for him a great punishment."