[Machine] The Messenger of Allah ﷺ said: "Whoever has Li'ka'b bin Al-Ashraf, then he has harmed Allah and His Messenger." Muhammad bin Maslamah said: "O Messenger of Allah, do you want me to kill him?" He ﷺ said: "Yes." Muhammad bin Maslamah requested permission to speak and he ﷺ granted it to him. Muhammad bin Maslamah then mentioned the story, narrating the plot to kill Li'ka'b bin Al-Ashraf. Muhammad bin Maslamah said: "When I had the chance, I killed him." They then came to the Prophet ﷺ and informed him of what they did. The Messenger of Allah ﷺ said: "War is deception." An-Nasa'i 4064  

قَالَ رَسُولُ اللهِ ﷺ مَنْ لِكَعْبِ بْنِ الْأَشْرَفِ فَإِنَّهُ قَدْ آذَى اللهَ وَرَسُولَهُ؟ فَقَالَ مُحَمَّدُ بْنُ مَسْلَمَةَ ؓ يَا رَسُولَ اللهِ أَتُحِبُّ أَنْ أَقْتُلَهُ؟ قَالَ نَعَمْ قَالَ فَأْذَنْ لِي فَأَقُولَ قَالَ قَدْ أَذِنْتُ لَكَ فَذَكَرَ الْقِصَّةَ فِي احْتِيَالِهِ فِي قَتْلِ كَعْبِ بْنِ الْأَشْرَفِ قَالَ فَلَمَّا اسْتَمْكَنَ مِنْهُ قَتَلُوهُ فَأَتَوُا النَّبِيَّ ﷺ فَأَخْبَرُوهُ فَقَالَ رَسُولُ اللهِ ﷺ الْحَرْبُ خَدْعَةٌ أَخْرَجَاهُ فِي الصَّحِيحِ مِنْ حَدِيثِ ابْنِ عُيَيْنَةَ