yogo naṣṭaḥ parantapa

evam-thus; parampara-disciplic succession; praptam-received; imam-this science; rajarsayah-the saintly kings; viduh-understood; sah-that knowledge; kalena-in the course of time; iha-in this world; mahata-by great; yogah-the science of one's relationship with the Supreme; nastah-scattered; parantapa-O Arjuna, subduer of the enemies.