Canto 1 - Boyhood
Bāla-kāṇḍa
Chapter 74: The Arrival of Paraśurāma
Text 1.74.3

गच्छन्तं तं तु राजानमन्वगच्छन्नराधिपः॥

gacchantaṁ taṁ tu rājānam anvagacchan narādhipaḥ

gacchantaṁ taṁ tu rājānam = while King Daśaratha was departing; anvagacchan = followed him; narādhipaḥ = King Janaka.

While King Daśaratha was departing, King Janaka followed him.