Narrated by:Jabir
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).
حَدَّثَنِي عَبْدُ اللَّهِ بْنُ مُحَمَّدٍ، حَدَّثَنَا سُفْيَانُ، عَنْ عَمْرٍو، عَنْ جَابِرٍ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " مَنْ لِكَعْبِ بْنِ الأَشْرَفِ ". فَقَالَ مُحَمَّدُ بْنُ مَسْلَمَةَ أَتُحِبُّ أَنْ أَقْتُلَهُ قَالَ " نَعَمْ ". قَالَ فَأْذَنْ لِي فَأَقُولَ. قَالَ " قَدْ فَعَلْتُ ".
Bukhari
Fighting for the Cause of Allah (Jihaad) • Hadith 239