yah-he who; priya-artham-for the satisfaction; utaṅkasya-of the great sage Utaṅka; dhundhu-nama-of the name Dhundhu; asuram-a demon; bali-very powerful (Kuvalayasva); sutanam-of sons; eka-vimsatya-by twenty-one; sahasraih-thousands; ahanat-killed; vrtah-surrounded.