Śrīmālādevī Siṃhanāda Sūtra

The Śrīmālādevī Siṃhanāda Sūtra (traditional Chinese: 勝鬘師子吼一乘大方便方廣經, Lion’s Roar of Queen Śrīmālā) is one of the main early Mahāyāna Buddhist texts belonging to the Tathāgatagarbha sūtras that teaches the doctrines of Buddha-nature and Ekayāna "One Vehicle" through the words of the Indian queen Śrīmālā. After its composition, this text became the primary scriptural advocate in India for the universal potentiality of Buddhahood.

Brian Edward Brown, a specialist in Buddha-nature doctrines, writes that the composition of the Śrīmālādevī Siṃhanāda Sūtra occurred during the Īkṣvāku Dynasty in the 3rd century CE as a product of the Caitika schools of the Mahāsāṃghikas. Alex Wayman has outlined eleven points of complete agreement between the Mahāsāṃghikas and the Śrīmālā, along with four major arguments for this association. Anthony Barber also associates the earlier development of the Tathāgatagarbha Sūtra with the Mahāsāṃghikas, and concludes that the Mahāsāṃghikas of the Āndhra region were responsible for the inception of the Buddha-nature doctrine. In the 6th century CE, Paramārtha wrote that the Mahāsāṃghikas revere the sūtras that teach the Buddha-nature doctrine.

The Śrīmālādevī Siṃhanāda Sūtra was translated to Chinese in 436 CE by Guṇabhadra (394-468) and later by Bodhiruci (672-727). A complete Sanskrit original is no longer extant, but extensive quotations are found in the Sanskrit text of the Ratnagotravibhāga as well as some recently discovered fragments conserved in the Schøyen Collection. It was later translated into English by Alex and Hideko Wayman as The Lion's Roar of Queen Srimala.

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