Bhagwad Gita
Chapter 10, Verse 28
आयुधानामहं वज्रं धेनूनामस्मि कामधुक्।
प्रजनश्चास्मि कन्दर्पः सर्पाणामस्मि वासुकिः।।10.28।।
Of weapons I am the thunderbolt; among cows I am the surabhi, givers of abundant milk. Of procreators I am Kandarpa, the god of love, and of serpents I am Vasuki, the chief.