The Messenger of Allah ﷺ said, "Who will deal with Kaab bin al-Ashraf? He has harmed Allah and His Messenger ﷺ."Muhammad bin Maslama said, "I will."So he went to Kaab and said, "We want you to lend us a wasq or two of food."Kaab replied, "Pledge your women to me as security."They said, "How can we pledge our women to you when you are the most handsome of the Arabs?"He said, "Then pledge your sons to me."They replied, "How can we pledge our sons? One of them would be reproached and it would be said, 'He was pledged for a wasq or two.' That would be a disgrace to us. But we will pledge our weapons to you." Sufyan explained that al-lamah means weapons.So they arranged to meet him, and they killed him. Then they came to the Prophet ﷺ and informed him.
حدثنا علي بن عبد الله حدثنا سفيان قال عمرو سمعت
قال رسول الله ﷺ من لكعب بن الأشرف فإنه قد آذى الله ورسوله ﷺ فقال محمد بن مسلمة أنا فأتاه فقال أردنا أن تسلفنا وسقا أو وسقين فقال ارهنوني نساءكم قالوا كيف نرهنك نساءنا وأنت أجمل العرب قال فارهنوني أبناءكم قالوا كيف نرهن أبناءنا فيسب أحدهم فيقال رهن بوسق أو وسقين هذا عار علينا ولكنا نرهنك اللأمة قال سفيان يعني السلاح فوعده أن يأتيه فقتلوه ثم أتوا النبي ﷺ فأخبروه