Valmiki Ramayana 1.6.20

सा तेन इक्ष्वाकु नाथेन पुरी सु परिरक्षिता ।यथा पुरस्तात् मनुना मानवेन्द्रेण धीमता॥

sā tena ikṣvāku nāthena purī su parirakṣitā |yathā purastāt manunā mānavendreṇa dhīmatā ||

Our plain-language meaning of this verse is waiting for scholar review.