Epigraphic sources chronicling 'Abraha's career include an inscription on the Marib Dam recording the quelling of an insurrection backed by a son of the deposed ruler, Esimiphaios, in the year 657 of the Sabaean era, i.e. between 540-550; vital repairs effected to the dam later in the same year; the reception of envoys from the Negus, from Byzantium, from Persia and from Al-Harith ibn Jabalah, the phylarch of Arabia; and the completion of repairs to the dam in the following year, followed by a great feast of rejoicing.