Canto 1 - Boyhood
Bāla-kāṇḍa
Chapter 70: Rāma’s Noble Lineage
Text 1.70.39

भगीरथात्ककुत्स्थश्च ककुत्स्थस्य रघुः सुतः॥

bhagīrathāt kakutsthaś ca kakutsthasya raghuḥ sutaḥ

bhagīrathāt = from Bhagīratha; kakutsthaḥ ca = was born Kakutstha; kakutsthasya raghuḥ sutaḥ = Kakutstha’s son was Raghu.

From Bhagīratha was born Kakutstha. Kakutstha’s son was Raghu.