Samudra manthan
The Vedic myth referenced is that of The Churning of the Ocean of Milk (Sanskrit "Samudra manthan"), in which two groups of gods, the Devas and the Asuras, churn the Cosmic Ocean of Milk (Sanskrit "Kshira Sagara") to bring forth treasures. In the course of the churning, the terrible, choking poison Halahala emerges from the ocean before the treasures and threatens to overwhelm the cosmos.