مختصر صحيح بخاري
Mukhtasar Sahih Bukhari
(Chapter)
Narrated Ibn Umar (may Allah be pleased with them) that the Messenger of Allah (peace and blessings of Allah be upon him) said: "A believer remains in a state of ease regarding his religion as long as he does not shed unlawful blood (i.e., when he sheds unlawful blood, he falls into corruption and hardship)."
Narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them) that the Prophet (peace and blessings of Allah be upon him) said to (Sayyiduna) Miqdad (may Allah be pleased with him): "When a believer hides his faith among the disbelievers and then he reveals his faith and you kill him, then (this is not correct, this is indeed a great sin, and O Miqdad!) in Makkah, you too used to hide your faith in the same way."
Allah’s saying:“Whoever saves a life, it is as if he saved all mankind.”(Al-Ma’idah: 32).
Narrated from Sayyiduna Abdullah bin Umar (may Allah be pleased with them) that the Noble Prophet (peace and blessings of Allah be upon him) said: "Whoever raises a weapon against us is not one of us." (i.e., is not a Muslim).
Allah’s saying:“Life for life, eye for eye…”(Al-Ma’idah: 45).
It is narrated from Sayyiduna Abdullah (bin Mas'ud) رضي الله عنه that the Messenger of Allah صلى الله عليه وسلم said: "The blood of a Muslim man who testifies that 'There is no god but Allah' (i.e., the Oneness of Allah) and my Messengership is not lawful except for one of three reasons: (1) life for life, (2) a married adulterer, (3) one who leaves the religion of Islam and separates from the community."
One who intends to shed innocent blood.
Narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them) that the Messenger of Allah (peace and blessings of Allah be upon him) said: "The three most evil persons in the sight of Allah Almighty are: (1) the one who commits injustice in the Haram of Makkah, (2) the one who, being a Muslim, wishes to follow the customs of ignorance, (3) the one who seeks to shed someone's blood unjustly."
Taking retribution personally instead of going to the ruler.
Abu Huraira (may Allah be pleased with him) says that I heard the Messenger of Allah (peace and blessings of Allah be upon him) say, "If someone peeks into your house without your permission and you throw a pebble at him and put out his eye, there is no sin upon you."
Blood money for fingers.
Narrated from Sayyiduna Ibn Abbas (may Allah be pleased with both of them) that the Messenger of Allah (peace and blessings of Allah be upon him) said: "This and this (i.e., the little finger and the thumb, both) are equal."