Bhagwad Gita
Chapter 1, Verse 14
ततः श्वेतैर्हयैर्युक्ते महति स्यन्दने स्थितौ।
माधवः पाण्डवश्चैव दिव्यौ शङ्खौ प्रदध्मतुः।।1.14।।
On the other side, both Lord Krishna and Arjuna, stationed on a great chariot drawn by white horses, sounded their transcendental conchshells.