Ibn Ishaq said: The Messenger of Allah (SAW) said: Any of the Jewish men you get the upper hand over – kill him. So Muhayyisa ibn Mas’ud (Ibn Hisham said: He was known as Muhayyisa ibn Mas’ud ibn Ka’b ibn ‘Amir ibn ‘Adiy ibn Majda’a ibn Haritha ibn Al-Harith ibn Al-Khazraj ibn ‘Amr ibn Malik ibn Al-Aws) pounced on Ibn Sunaina (Ibn Hisham said: He was known as Ibn Sunaina, one of the Jewish merchants who was their close associate and did business with them), and killed him. Huwayyisa ibn Mas’ud had not yet yielded into Islam when this happened. He was older than Muhayyisa. And when Muhayyisa killed Ibn Sunaina, Huwayyisa began to beat him, saying: What enemy of Allah are you, have you killed him?! Indeed I swear by Allah the heavy fat on your belly comes from his wealth. Muhayyisa replied: I said, by Allah, I was ordered to kill him by him who, if he ordered me to kill you, I would decapitate you too. (He said: I swear by Allah this was part of when Huwayyisa began to yield into Islam.) Huwayyisa said: And by Allah, if Muhammad ordered you to kill me, you would kill me?! Muhayyisa replied: Yes, I swear by Allah if He ordered me to strike your head off, I would! Huwayyisa said: I swear by Allah, a religion that can bring you to this is indeed amazing! And so Huwayyisa yielded into Islam.