prātapad viṣvag īritaḥ

tasya-his; murdhnah-from the head; samudbhutah-generated; sa-dhumah-with smoke; agnih-fire; tapah-mayah-because of severe austerities; tiryak-sideways; urdhvam-upward; adhah-downward; lokan-all the planets; pratapat-heated; visvak-all around; iritah-spreading.