Vastu-purusa mandala
A myth explains the symbolic diagram (mandala): the
gods in seeking to impose order on chaos, forced the
primeval man, Purusa, into a square grid, the vastu-purusa
mandala, whose basic unit is the square pada
Hindu temple is the dwelling of the gods. It is based on the
grid systems of 64 (8x8) and 81 (9x9) squares.
Square is the prefect shape for the ground plan.
Priests perform ritual of consecrations which connect
between sexual rites and fertility in Hindu architecture.