Death of Huwairith

The Holy Prophet (sa) passed the verdict of death for Huwairith bin Nuqaid as he had greatly persecuted the Holy Prophet (sa) in Mecca and devised a number of schemes to cause him harm and would also revile him. When Hazrat Abbas (ra), the uncle of the Holy Prophet (sa), prepared the camel for Hazrat Fatimah (ra) and Hazrat Umm Maktum to leave from Mecca to Medina and they sat down, Huwairith caused the camel to fall down. Hazrat Ali (ra) killed Huwairith on the occasion of the Conquest of Mecca when he had already fled from there.

(Ali bin Burhan al-Din al-Halabi, Al-Sirah al-Halabiyyah, Vol. 3, Bab Dhikr Maghaziyah [Beirut, Lebanon: Dar al-Kutub al-Ilmiyyah, 2002], 131)