samiksya prabhavas trayah
tapyamanam-while practicing austerities; tri-bhuvanam-the three worlds; pranayama-practice by breathing exercise; edhasa-fuel; agnina-by the fire; nirgatena-issuing out; muneh-of the great sage; murdhnah-the top of the head; samiksya-looking over; prabhavah trayah-the three great gods (Brahma, Visnu and Mahesvara).