An-Nisa 4:93

Waman yaqtul mu/minan mutaAAammidan fajazaohujahannamu khalidan feeha waghadiba AllahuAAalayhi walaAAanahu waaAAadda lahu AAathaban AAatheema

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.

Whoever kills a believer deliberately, his reward is Jahannam (Hell) where he shall remain forever, and Allah shall be angry with him and shall cast curse upon him, and He has prepared for him a mighty punishment.