siddhiṁ yena prapadyate

karnau-the ears; asya-of the gigantic form; vinirbhinnau-being thus separated; dhisnyam-the controlling deity; svam-own; vivisuh-entered; disah-of the directions; srotrena amsena-with the hearing principles; sabdasya-of the sound; siddhim-perfection; yena-by which; prapadyate-is experienced.