KILLING A BELIEVER WITHOUT REMORSE
In Imam al-Mundhiri’s al-Targhib wa ‘l-Tarhib, 3/278 it has the following hadith from `Ubada ibn al-Samit (Allah be well pleased with him) that he said:
“The Messenger of Allah (Allah bless him and grant him peace) said that Allah said: ‘Whoever kills a Muslim without remorse [s: without repentance for slaying a beliver in conflict based on one’s personal conviction of correctness], Allah will not accept any deed from him whether obligatory or supererogatory’..”
من قتل مؤمنا فاغتبط بقتله، لم يقبل الله منه صرفا، و لا عدلا…
- The blood of a Muslim is sacred.
- Spilling Muslim blood is unlawful.
- Klling a believer remorselessly obviates acts of devotion.
And Allah knows best.