The Bhagavā (Buddha) journeyed to Uruvelā, encountering three dreadlocked ascetic brothers — Uruvelakassapa, Nadīkassapo, and Gayākassapo — who were leaders of one thousand ascetics. To overcome Uruvelakassapa's pride and belief in his own spiritual superiority, the Bhagavā performed a series of miracles, including subduing a fierce nāga, being visited by divine beings (Four Great Kings, Sakka, Brahmā Sahampati), discerning Uruvelakassapa's thoughts, and demonstrating control over natural elements and phenomena. Despite each miracle, Uruvelakassapa, while impressed by the Bhagavā's power, repeatedly concluded that the Bhagavā was not an arahant like himself. Finally, the Bhagavā directly challenged Uruvelakassapa's delusion, leading to the conversion of all three brothers and their one thousand followers, who then received ordination. Subsequently, the Bhagavā delivered the Fire Discourse at Gayāsīsa, explaining how all sensory experiences are "burning" with passion, aversion, and delusion, which led to the liberation of all one thousand newly ordained bhikkhus.
