तत्रैव वसतस्तस्य रावणो नाम राक्षस:
tatraiva vasatas tasya rāvaṇo nāma rākṣasaḥ
While he was living right there, a rākṣasa named Rāvaṇa appeared (came into the account). The line introduces a disruptive, adharma-leaning force entering the scene, foreshadowing a moral test for the one residing there.
नारद उवाच
The verse functions as a moral signal: when a rākṣasa figure enters a setting where someone is peacefully dwelling, it often marks the arrival of temptation, violence, or disruption—an impending test of restraint, protection of the innocent, and adherence to dharma.
Nārada, as narrator, introduces a new character: a rākṣasa named Rāvaṇa. The statement situates Rāvaṇa’s appearance in the same place where 'he' (the previously mentioned person) is residing, setting up the next events of the episode.