The Soma Sacrifice — The Yajur Veda

The Soma sacrifice is the oldest, longest, and most prestigious of the great Vedic rites. The Yajur Veda contains the priest’s instructions for it in detail.

What soma is. Soma is the juice pressed from a mountain plant (probably ephedra, though the certain identification is lost), known to produce alertness and a mild altered state. The whole rite is built around pressing this plant, filtering the juice, offering it to the gods, and the priests drinking the residue.

Why it matters. The Yajur Veda treats the Soma sacrifice as the standard against which all other rites are measured. A king performing it once was considered to have completed the highest religious act available to him.

The basic shape (cleaned up to the essentials):

Preparation. Days of consecration (diksha) for the sponsor — fasting, simple living, removal from normal duties.
The three pressings. On the central day, the soma plant is pressed three times — morning, midday, evening. Each pressing yields juice that is filtered through wool, mixed with water and milk, and offered to specific gods.
The chants. Throughout the day, the four priests (hotar, udgatar, adhvaryu, brahman) coordinate — verses from the Rig Veda, songs from the Sama Veda, formulas from the Yajur Veda, all precisely timed.
The animal offering. A goat is offered (a feature of the older form, increasingly symbolic in later periods).
The conclusion. Final libations, the avabhritha (purifying bath), the closing acts. The whole rite takes between one and many days depending on the variant.

There are several variants — the simplest is the Agnishtoma (“praise of Agni”), a five-day rite that is the basic Soma sacrifice. From it extend longer variants (Atyagnishtoma, Ukthya, Atiratra) and the multi-day great rites.

A few things to know plainly:

The Soma rite is rare today. Authentic full performances happen only at a few traditional sites in India in any given decade.
The plant is uncertain. Modern ritual uses approved substitutes (often ephedra-derivative or related plants).
The rite’s logic survives even where the full form has lapsed. Modern temple festivals, big homa rites, and family-level great pujas all derive their structure (preparation, central day, multiple offerings, closing bath) from the soma model.

For a reader, the Soma sacrifice is the template of the Vedic religious world. Once you understand its shape — preparation, threefold action, coordinated chant, closing purification — you can recognise the same shape in almost every Hindu rite that came after.

The next chapter is even larger: the three rites a king performed when he wanted to claim more than usual.