putrān barhiṣmato nayaiḥ

bhasmasat-into ashes; kriyamanan-being made; tan-all of them; druman-the trees; viksya-seeing; pita-mahah-Lord Brahma; agatah-came there; samayam asa-pacified; putran-the sons; barhismatah-of King Barhisman; nayaih-by logic.