Bhagavad Gita · 1.14

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

tataḥ śhvetair hayair yukte mahati syandane sthitau mādhavaḥ pāṇḍavaśhchaiva divyau śhaṅkhau pradadhmatuḥ

Then, seated in a magnificent chariot yoked with white horses, Madhava (Krishna) and the son of Pandu (Arjuna) blew their divine conches.

— Bhagavad Gita 1.14

Source: Sacred-Texts.com (Sanskrit) + Bhagavad-Gita.io (translations)