(159) باب الْفَتْكِ بِأَهْلِ الْحَرْبِ
Narrated Jabir:
The Prophet (ﷺ) said, "Who is ready to kill Ka`b bin Ashraf (i.e. a Jew)." Muhammad bin Maslama replied, "Do you like me to kill him?" The Prophet (ﷺ) replied in the affirmative. Muhammad bin Maslama said, "Then allow me to say what I like." The Prophet (ﷺ) replied, "I do (i.e. allow you).
Reference: Sahih al-Bukhari 3032
In-book reference: Book 56, Hadith 239
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 4, Book 52, Hadith 271