Śrīmālādevī Siṃhanāda Sūtra
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
The Tathāgatagarbha sūtras are a group of Mahayana sutras that present the concept of the "womb" or "embryo" (garbha) of the tathāgata, the buddha. Every sentient being has the possibility to attain Buddhahood because of the tathāgatagarbha.
Cave complex associated with the Mahāsāṃghika sect. Karla Caves, Mahārāṣtra, India