Bhagavad Gita: Chapter 1, Verse 15

पाञ्चजन्यं हृषीकेशो देवदत्तं धनञ्जयः ।
पौण्ड्रं दध्मौ महाशङ्खं भीमकर्मा वृकोदरः ॥ १-१५॥

pāñcajanyaṃ hṛṣīkeśo devadattaṃ dhanañjayaḥ
pauṇḍraṃ dadhmau mahāśaṅkhaṃ bhīmakarmā vṛkodaraḥ 1.15

Hrishikesha blew His conch shell, called Panchajanya; Arjuna blew the Devadatta; and Bhima, the voracious eater, and performer of herculean tasks, blew his terrific conchshell, called Paundra.