Logically, Murder is a Prohibition for which one must be Martyred before Transgression, even without a specific Verse to teach this: Pesachim 25b
Closing the eyes of a person who isn't yet dead: Shabbat 151b
Permissible means of causing the eyes to close: Shabbat 151b
Judgment and Punishment
A murderer who believed murder was permitted: Makkot 7b
Determining Intent to kill a specific person: Ketuvot 15a
Using any means to kill a murderer, if the specific punishment prescribed is unavailable: Bava Metzia 31b
Accidental murder of one's enemy: Makkot 7b
Whether an enemy must be warned before he murders, in order to be liable for punishment: Makkot 6b, 9b
Removing a murderer from the Temple, if he flees there and attempts to perform the Temple Service: Yuma 85b; Makkot 12a
Removing a murderer from the Traveling Tabernacle, if he flees there and attempts to perform the Temple Service: Makkot 12a
Fleeing to the City of Refuge, even if one killed intentionally: Makkot 9b, 10b
Whether a court is permitted to handle a murder case which they actually witnessed: Makkot 12a
Handling a person who is attempting to Kill
Preventing Murder by Killing the Murderer: Pesachim 25b
Beyond the Laws
On the global consequences of the murder of two brothers: Succah 29a
Comparing the wasting of seed to murder and idolatry: Niddah 13a
Comparing lending with interest to murder: Temurah 6b
