Paumacariya 1.84

1.84

aha vajjajaṅghanaravaï, diṭṭhā sīyā lavaṁkusuppattī
jēūṇa naravarindē, piyarēṇa samaṁ kayaṁ jujjhaṁ

Then Sītā was seen by King Vajrajaṅgha; the birth of Lava and Kuśa; / having conquered the best of kings, they fought with their father;