Shloka 2.110.33
लोकसमुत्पत्ति-वर्णनम् तथा इक्ष्वाकुवंश-प्रशंसा (Cosmogony and Ikshvaku Genealogy as Counsel to Rama)
शङ्खणस्य च पुत्रोऽभूच्छूर श्रीमान्सुदर्शनः।सुदर्शनस्याग्निवर्णः अग्निवर्णस्य शीघ्रगः।।2.110.30।।शीघ्रगस्य मरुः पुत्रो मरोः पुत्रः प्रशुश्रुवः।प्रशुश्रुवस्य पुत्रोभूदम्बरीषो महाद्युतिः।।2.110.31।।अम्बरीषस्य पुत्रोभून्नहुषः सत्यविक्रमः।नहुषस्य च नाभागः पुत्रः परमधार्मिकः।।2.110.32।।अजश्च सुव्रतश्चैव नाभागस्य सुतावुभौ।अजस्यैव च धर्मात्मा राजा दशरथस्सुतः।।2.110.33।।
sa rāghavāṇāṃ kuladharmam ātmanaḥ sanātanaṃ nādya vihantum arhasi |
prabhūtaratnām anuśādhi medinīṃ prabhūtarāṣṭrāṃ pitṛvan mahāyaśaḥ ||
O greatly renowned one, you should not today abandon the eternal family-dharma of the Rāghavas. Rule this earth—rich in treasures and broad in realms—just as your father did.
The son of Shankhana was the glorious Sudarshana, father of Agnivarna. Shighraga was the son of Agnivarna whose son was Maru. Maru's son was Prashushruva and to Prashushruva was born splendid Ambarisha. Nahusha of indisputable prowess was the son of Ambarisha whose son was the supremely righteous Nabhaga. Nabhaga had two sons, Aja and Suvrata and Aja's son was the righteous king Dasaratha.
Kuladharma and rajadharma: personal greatness is proved by preserving inherited righteous norms and governing for the common good, in continuity with one’s forebears.
The discourse culminates in urging Rāma to uphold the Rāghava tradition by accepting and administering kingship.
Steadfastness in duty (dharma-niṣṭhā) and filial alignment with a righteous model of rule (pitṛvat).