Hadith.5172 - Hammad ibn Isa narrated from Abu Al-Safatij from Abu Abdullah Imam Jafar ibn Muhammad Al-Sadiq (as) regarding the saying of Allah (swt), the Almighty and Majestic:
"And whoever kills a believer intentionally, his recompense is Hell" (Surah An-Nisa 4:93).
Imam (as) said
"If Allah (swt) chooses to punish him."