tasmāt - from Kṣemādhi; samarathaḥ - a son named Samaratha; tasya - from Samaratha; sutaḥ - son; satyarathaḥ - Satyaratha; tataḥ - from him (Satyaratha); āsīt - was born; upaguruḥ - Upaguru; tasmāt - from him; upaguptaḥ - Upagupta; agni-sambhavaḥ - a partial expansion of the demigod Agni.

The son of Kṣemādhi was Samaratha, and his son was Satyaratha. The son of Satyaratha was Upaguru, and the son of Upaguru was Upagupta, a partial expansion of the fire-god.