Conversion of the three Kassapa Brothers
At Uruvela, there lived three matted-hair (Jatila) ascetics known as Uruvela Kassapa, Nadi Kassapa and Gaya Kassapa. They were all brothers living separately with Five hundred, Three hundred and Two hundred disciples respectively. With much effort, at times using His psychic powers too, the Buddha at first converted the eldest Kassapa who was greatly infatuated by his own spiritual attainments. Therefore he with his disciples entered the Order and obtained the higher Ordination. The other two brothers and their disciples followed suit.
Accompanied by them all, the Buddha repaired to Gaya Sisa where He preached the Adittapariyaya Sutta - “All in Flames”, hearing which all attained Arahantship.