During a visit to the region of Uruvela, the Buddha goes to a hermitage of fire worshipping ascetics and asks one of its leaders, Uruvela-Kassapa, to stay in the fire-offering chamber. Uruvela-Kassapa warns the Buddha that there is a dangerous nāga living in the chamber, but agrees after the Buddha insists.
During a visit to Uruvela, the Buddha visits a fire-worshipping hermitage led by Uruvela-Kassapa. He asks Uruvela-Kassapa to stay in the fire-offering chamber. Uruvela-Kassapa warns the Buddha that there is a dangerous nāga living in the chamber but agrees after the Buddha insists.