Bhagwad Gita
Chapter 10, Verse 29
अनन्तश्चास्मि नागानां वरुणो यादसामहम्।
पितृ़णामर्यमा चास्मि यमः संयमतामहम्।।10.29।।
Of the celestial Naga snakes I am Ananta; of the aquatic deities I am Varuna. Of departed ancestors I am Aryama, and among the dispensers of law I am Yama, lord of death.