About 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.
Thangkha with Jonang lama Dolpopa Sherab Gyaltsen (1292–1361)

Shentong – Reconciling Madhyama with the Buddha-nature

The notion of sentong grew out the Tibetan attempts to reconcile the contradiction between the Madhyama stance on the emptiness of phenomena, and the later notion of an eternal Buddha-nature. Shentong views the two truths doctrine as distinguishing between relative and absolute reality, agreeing that relative reality is empty of self-nature, but stating that absolute reality is "empty" (Wylie: stong) only of "other" (Wylie: gzhan) relative phenomena, but is itself not empty. This absolute reality is .