These writings have spawned a religion, whose adherents  practice a well-known form of Yoga.
The name for these religious writings comes from the Sanskrit  word for thread or warp. The writings consist of magical formulas,  mostly in the context of discussions between Shiva and his wife  Kali. These writings have spawned a religion, whose adherents  practice a well-known form of Yoga. For ten points, name these  writings, written in India in the 6th or 7th centuries.
The name for these religious writings comes from the Sanskrit  word for thread or warp.
{tantra}s