manu-antara — of reigns of the various Manus; anukathanam — the detailed description; gaja-indrasya — of the king of the elephants; vimokṣaṇam — the liberation; manuantara-avatārāḥ — the particular incarnations of the Supreme Personality of Godhead in each manvantara; ca — and; viṣṇoḥ — of Lord Viṣṇu; hayaśirā-ādayaḥ — such as Lord Hayaśīrṣā.