The Śrīmālādevī Siṃhanāda Sūtra is one of the main early Mahāyāna Buddhist texts belonging to the Tathāgatagarbha sūtras that teaches the doctrines of Buddha-nature and "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.
Relief image of the Great Stupa at Amaravati in Andhra Pradesh, India