An annual celebration called the Ìmárúgbó (or Òkùnrìn) festival was instituted between the two city-states during which the King Òràngún leaves his palace with his chiefs to pay a day-long homage to the King Ọba'lúmọ in the Ọba'lúmọ̀'s palace. This is partly in symbolic tribute to Ọba'lúmọ̀'s land-grant and his precedence over the Òràgún in the region, and partly in appreciation of Ọba'lúmọ̀'s hosting of the Ọ̀ràngún's elderly mother, who could not continue with the immigrant party to their allocated land. The Ọ̀ràngún's mother subsequently died in the palace of the Ọba'lúmọ̀, and was buried at Ìsẹ̀dó, so the Ọ̀ràngún also visits her grave there.