Aswad Ansi (Arabic: الاسود العنسي), better known as Abhala son of Kaab (Arabic: عبهلة بن كعب), was a prophet claimant who claimed prophethood in Yemen towards the end of the prophet Muhammad's lifetime, around 630 AD. He claimed to receive divine inspiration in the form of words and is recorded to have recited them to his people.
He was known to be a soothsayer and a sorcerer who had a passion for consumption of alcohol. He had an ability to dazzle a crowd with tricks, according to traditional accounts he had a donkey whom he had trained to kneel before him, he would tell the donkey, in front of a large crowd "Kneel before your lord" and it would kneel, and then he would say to it "Bow before your lord" and it would bow. He eventually managed to convince the people of Yemen that he was a prophet.
He went on to invade Najran and most of the Yemen. After his invasion of Yemen he changed his title from "Prophet of God" to "Rahman" (The Most Merciful), which is one of the 99 names of Allah. He thus claimed to be God. His rule of the Yemen was short lived as Muhammad later sent Fairouz ad-Delami to assassinate him under the supervision and planning of Qais bin Hubaira.
According to al-Baladhuri, after Fairouz assassinated the would be prophet he climbed to the top of the palace wall carrying the severed head and shouted, "Allahu Akhbar!" ("God is greater!") Then he proclaimed the shahadah, denounced Aswad as a false prophet and an enemy of Allah, and threw the severed head down at a small group of men who had gathered below, before escaping to Medina.