Volume 4, Book 54, Number 536:

Narrated Abu Huraira:

Allah's Apostle said, "Once while a prophet amongst the prophets was taking a rest underneath a tree, an ant bit him. He, therefore, ordered that his luggage be taken away from underneath that tree and then ordered that the dwelling place of the ants should be set on fire. Allah sent him a revelation:-- "Wouldn't it have been sufficient to burn a single ant?