ततः श्वेतैर्हयैर्युक्ते महति स्यन्दने स्थितौ। माधवः पाण्डवश्चैव दिव्यौ शङ्खौ प्रदध्मतुः ॥

tataḥ śhvetairhayairyukte mahati syandane sthitau mādhavaḥ pāṇḍavaśhchaiva divyau śhaṅkhau pradadhmatuḥ

Then, stationed in their great war-chariot, yoked to white horses, Mâdhava and the son of Pându blew their divine conches.

In plain words: On the other side, Krishna (here called Madhava) and Arjuna stand in their great chariot pulled by white horses. They blow their divine conch shells.