Verse 1.15: The inner-dwelling Lord Shri Krishna blew His conch named Panchajanya; Dhananjaya (Arjuna) blew his conch named Devadatta; and Bhima, of terrible deeds and voracious appetite, blew his great conch named Paundra.
Commentary: 'Panchajanyam Hrishikeshah'—The directly manifest Lord Shri Krishna, the inner-dweller who knows the innermost thoughts of all, standing on the side of the Pandavas, blew the conch named 'Panchajanya'. The Lord had slain a demon named Panchajana who had taken the form of a conch and then accepted that form as a conch; hence this conch became known as 'Panchajanya'.
'Devadattam Dhananjayah'—During the Rajasuya sacrifice, Arjuna had conquered many kings and gathered immense wealth. For this reason, Arjuna came to be named 'Dhananjaya' (see note on verse 14). While fighting demons like the Nivatakavachas, Indra had given Arjuna the conch named 'Devadatta'. The sound of this conch was very powerful, causing the enemy army to become agitated. Arjuna blew this conch.
'Paundram Dadhmau Mahashankham Bhimakarma Vrikodarah'—Because he slew demons like Hidimbasura, Bakasura, Jatasura, and powerful heroes like Kichaka and Jarasandha, Bhimasena came to be named 'Bhimakarma' (one of terrible deeds). In his stomach, besides the digestive fire, there was a special fire named 'Vrika', which digested a very large quantity of food. For this reason, he was named 'Vrikodara' (one with a voracious appetite). Bhimasena, of such terrible deeds and voracious appetite, blew the very large conch named 'Paundra'.
★🔗