Dhanvantari

In Purāṇic and epic accounts Dhanvantari first appears as one of the products of the Samudra Manthana (the churning of the Ocean of Milk), emerging with a pot of amṛta (the elixir of immortality). This cosmogonic appearance is attested in sources summarizing the Bāla Kāṇḍa of the Rāmāyaṇa, the Bhāgavata Purāṇa and the Brahmaṇḍa Purāṇa. Later Purāṇic material also records terrestrial incarnations: texts describe an earthly manifestation associated with the royal house of Kāśī (Varanasi) in which Dhanvantari is born as a son of King Dīrghatāpasa and is educated in medicine (with the sage Bharadvāja named as his teacher in some accounts), after which he classifies and transmits Āyurvedic knowledge to disciples. These accounts link the divine/cosmic origin of healing knowledge with an institutionalized, lineage-based transmission on earth.

Sanskritic iconographic descriptions present Dhanvantari as a handsome, Viṣṇu-like figure commonly shown with four arms. Variant attributes recorded in the sources include a pot or bowl of amṛta (prominently), and one or more of the following: the śaṅkha (conch), cakra (discus), medicinal herbs or a manuscript representing Āyurveda, and in some iconographic notes a jalauka (leech) is shown — the sources treat these elements as variant symbolic attributes rather than an invariant fixed set.

Purāṇic and later traditions credit Dhanvantari with promulgating, classifying and teaching Āyurveda; he is described in texts as the physician of the devas and as a master who 'dispels ailments' and restores the sick. Mythic narratives recount him producing medicines (for example concocting an antidote when disciples are overcome by serpent venom) and restoring consciousness; his emergence bearing amṛta ties him to life-preserving, immortality-associated powers. These descriptions appear in epic and Purāṇic summaries that present him as both a cosmically-originating divine healer and as an authoritative transmitter of medical knowledge.