But whoever kills a believer intentionally - his recompense is Hell, wherein (4:93)

﴿وَمَن يَقْتُلْ مُؤْمِنًا مُّتَعَمِّدًا فَجَزَاؤُهُ جَهَنَّمُ خَالِدًا فِيهَا وَغَضِبَ اللَّهُ عَلَيْهِ وَلَعَنَهُ وَأَعَدَّ لَهُ عَذَابًا عَظِيمًا﴾
[ النساء: 93]

4:93 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.

If anyone kills a believer, deliberately intending to do so, his recompense will be Hell to live there eternally.
Allah will be angry with him, distance him from His mercy, and will prepare for him a great punishment for committing such a serious crime.
The belief of the Ahl as-Sunnah wa’l-Jamā’ah is that if the killer is a believing Muslim, he will not literally remain in Hell eternally; but he will be punished in it for a long period and will then be removed from there through Allah’s grace.

And whoever kills a believer intentionally, his recompense is Hell to abide therein, and the Wrath and the Curse of Allah are upon him, and a great punishment is prepared for him.

phonetic Transliteration

Waman yaqtul muminan mutaAAammidan fajazaohu jahannamu khalidan feeha waghadiba Allahu AAalayhi walaAAanahu waaAAadda lahu AAathaban AAatheeman

Abdullah Yusuf Ali - Translation

If a man kills a believer intentionally, his recompense is Hell, to abide therein (For ever): And the wrath and the curse of Allah are upon him, and a dreadful penalty is prepared for him.

Safi-ur-Rahman al-Mubarakpuri

And whoever kills a believer intentionally, his recompense is Hell to abide therein; and the wrath and the curse of Allah are upon him, and a great punishment is prepared for him.

Page 93 English transliteration