sasṛjus tad-didhakṣayā

drumebhyah-unto the trees; krudhyamanah-being very angry; te-they (the ten sons of Pracinabarhi); tapah-dipita-manyavah-whose anger was inflamed because of long austerities; mukhatah-from the mouth; vayum-wind; agnim-fire; ca-and; sasrjuh-they created; tat-those forests; didhaksaya-with the desire to burn.