urdhva-bahur nabho-drstih
sah-he (Hiranyakasipu); tepe-performed; mandara-dronyam-in a valley of Mandara Hill; tapah-austerity; parama-most; darunam-difficult; urdhva-raising; bahuh-arms; nabhah-toward the sky; drstih-his vision; pada-aṅgustha-with the big toes of his feet; asrita-resting on; avanih-the ground.