In 625 some men requested that Muhammad send instructors to teach them Islam, but the men were bribed by the two tribes of Khuzaymah who wanted revenge for the assassination of Sufyan bin Khaled by Muhammad's followers and they killed the Muslims. After killing Asim ibn Thabit, Hudhayl wanted to sell his head. According to William Montgomery Watt, the most common version of the event states that the motives of the Banu Lahyan for attacking Muslims, was that the Banu Lahyan wanted to get revenge for the assassination of their chief at Muhammad's instigation. So they bribed the two tribes of Khuzaymah to say they wanted to convert to Islam. Watt also said that the seven men Muhammad sent may have been spies for Muhammad and instructors for Arab tribes. He also said that the it is difficult to verify the exact date the assassination of their chief took place. According to the Muslim scholar Safiur Rahman Mubarakpuri, the Qurayshordered Khubayb bin Adi to be crucified by Uqba bin al-Harith because he had killed Uqba bin al-Harith's father. Muhammad ordered The Mission of Amr bin Umayyah al-Damri to assassinate Abu Sufyan to avenge Khubyab bin Adi.
Death
Khubaib ibn Adiy was taken captive and escorted in a procession of thousands which was led by men like Abu Sufyan ibn Harb, and Safwan ibn Umayah, and which included Said ibn Amir. The women and children pushed him to the place set for his death. Khubaib's death was to be in revenge for Quraysh losses in the battle of Badr. When the assembled throng arrived at the appointed place with him, the prisoner, Khubaib said in a firm but quiet voice amid the shouting of women and children: This the Quraysh allowed. Khubaib faced the Ka'bah and prayed two rakaats. Then Khubaib faced the Quraysh leaders. Then the Meccans set about dismembering Khubayb's body while he was yet alive and taunting him in the process. With his blood flowing, he replied, "By God, I would not want to be safe and secure among my family while even a thorn hurts Muhammad." People shook their fists in the air and the shouting increased. Khubaib lifted his eyes to the heavens above the wooden cross. Thereafter it could not be counted the number of swords and spears which cut through Khubaib's body.
