worship and ritual
What is tarpana and why is water offered to ancestors and deities?
What tarpana is
The word tarpana comes from a Sanskrit root meaning to satisfy or to please. The ritual involves cupping water in the hands and letting it flow out slowly, with prayers, as an offering. It is done standing in a river, a pond, or at home with a vessel of water. Sesame seeds are added to the water, and kusha grass is often held in the hand. Both are seen as pure and as carrying the offering to those it is meant for. The tradition holds that the offering nourishes those it is directed toward, even across the boundary between the living and the dead.
The three kinds of offering
Tarpana is not only for ancestors. The tradition divides it into three parts. The first goes to deities, the second to sages and teachers of the past, and the third to the pitrus, meaning the ancestors of one's own family line. Each group is honoured in turn. This order reflects a sense that a person owes something to all three, to the divine, to the teachers who kept knowledge alive, and to the family line that gave them life. The ritual is a way of acknowledging all three debts at once.
Where it comes from
Tarpana is described in some of the oldest layers of Hindu ritual texts, including the Grihyasutras and the Dharmashastra literature. These texts set out when and how it should be done. It is closely tied to the Shraddha ceremony, the broader set of rites for the dead. The most well-known time for tarpana is Mahalaya Amavasya, the new moon day at the end of the fortnight called Pitru Paksha, which is set aside each year for remembering the dead. Many people also perform tarpana on other new moon days, on the anniversary of a parent's death, or during pilgrimages to sacred rivers.
Why water
Water is used because the tradition sees it as the most basic and universal offering, available to everyone. It is also seen as a carrier, something that can move an intention or a prayer from one place to another. The sesame seeds added to it are considered especially suited to rites for the dead, seen in the tradition as purifying and as acceptable to the pitrus. Kusha grass is considered ritually clean and is used in many solemn ceremonies, not only tarpana.
How it is kept today
Many Hindus perform tarpana at rivers, at the sea, or at home. During Pitru Paksha, places like Gaya, Varanasi, and Rameswaram draw large numbers of people specifically for these rites. In the diaspora, families often adapt the ritual to what is available, using a bowl of water at home. Some do it every month, others only on the main annual occasion. The details vary by region, family tradition, and community. What stays the same across most forms is the sense of gratitude and the wish to stay connected to those who are gone.