prayase-when the endeavor; apahate-futile; tasmin-that; daitya-indrah-the King of the demons, Hiranyakasipu; parisaṅkitah-very much afraid (considering how the boy was protected); cakara-executed; tat-vadha-upayan-various means for killing him; nirbandhena-with determination; yudhisthira-O King Yudhisthira.