The devas along with the asuras made a decision to get Amṛta (Ambrosia—the celestial honey of immortalily) by churning The ocean of milk. The Devas went to provide Mandara-mountain, for use as being the churning rod. Their endeavor was futile. The asuras built a demo with the same result. https://angeloftfqb.glifeblog.com/28321400/detailed-notes-on-23naga