Prayer for Rain Sutra ［請雨経］ (Chin Ch’ing-yü-ching;  Shōu-kyō): A sutra that details the ritual of prayer for rain and how to perform it properly. Translated into Chinese in the eighth century by Pu-k’ung ( Amoghavajra), a patriarch of Chinese Esoteric Buddhism from India, it was used in China and Japan in prayer rituals to bring rain, typically conducted at the request of the sovereign to alleviate drought or ensure a rich harvest. There are two additional Chinese versions, one translated by Narendrayashas in 585 and the other by Jnānayasha in 550. There is also a Tibetan translation.