Qaaroon was the paternal cousin of Nabi Musaa (alayhis salaam). He is famed for his wealth and notorious for his arrogance. He did not accept Imaan. He had so much wealth that according to the Qur’aan, carrying only the keys of his treasure vaults would exhaust men of strong physique.
Qaaroon exceeded all bounds of arrogance and pride. He held in contempt those who had accepted Imaan. Nabi Musaa (alayhis salaam) constantly admonished him and exhorted him to be grateful to Allah Ta’ala for all the wealth, and to fulfil its rights. Qaaroon retorted that the wealth he had was not a bestowal by the Rabb of Musaa, but was the consequence of his intelligence and expertise.
One day Allah’s chastisement overtook him. The earth swallowed Qaaroon, his wealth and his palace. He disappeared underground forever with all his possessions.