Dhanteras, formally known as Dhanvantari Trayodashi, falls on the thirteenth lunar day (Trayodashi) of the dark fortnight of Kartik month and marks the opening of the five-day Diwali festival. The name fuses Dhan (wealth) and Teras (thirteen), and the day is celebrated as a moment when the goddess Lakshmi and the treasurer of the gods, Kubera, are jointly invited to bless the household with prosperity and abundance for the year ahead.
Hindu tradition holds that on this day, Lord Dhanvantari, the divine physician and an avatar of Vishnu, emerged from the cosmic ocean during the churning of the seas (Samudra Manthan), carrying the pot of Amrita, the nectar of immortality. For this reason Dhanteras is also observed as Dhanvantari Jayanti, a day sacred to health, healing, and the Ayurvedic tradition. Doctors, pharmacists, and families alike offer prayers for physical well-being alongside financial blessings.
The purchase of gold, silver, or new utensils on Dhanteras is considered deeply auspicious, the belief is that metal bought on this tithi carries the blessing of Lakshmi and multiplies prosperity in the home. Even a small coin or a single silver item is enough; the intention and the timing matter far more than the amount spent.