Matsyapurana 12.50

12.50

nārāyaṇātmakāḥ sarve rāmasteṣvagrajo 'bhavat
rāvaṇāntakarastadvad raghūṇāṃ vaṃśavardhanaḥ //

Dîrghabâhu was the son of Aja, Ajapâla of Dîrghabâhu and Daśaratha of Ajapâla. Daśaratha became the father of four sons, who were the incarnations of Nârâyaṇa, and Râma, who killed Râvaṇa, was the eldest, and whose bioghraphy was written by the great poet Vâlmîki. Râma was the father of Lava and Kuśa.—49-51.