This text is included among the class of tathāgatagarbha sūtras and features several important concepts related to buddha-nature, such as the singe vehicle and a universal element possessed by sentient beings that is equated with the ultimately pure nature of the mind. It also includes some proto-Zhentong explanations of emptiness as an absence of the extraneous, rather than an inherent quality of nothing-ness. +
A lengthy commentary that presents the ''Uttaratantra'' in a positive light and opposes the positions of earlier scholars from Sangpu Neutok, such as Ngok and Chapa. Some scholars of the Nyingma school have mistakenly assumed this to be a work of Longchenpa. +
Though this work isn't necessarily about buddha-nature, it is highly relevant to this topic for Sakya Paṇḍita's criticism of the proponents of the ''Uttaratantra'' and became an important source for the Sakya school's position on the polemical issues that surround this topic. These critical positions would be reiterated by later generations of scholars of the Sakya and Geluk traditions. +
Mikyö Dorje explains the transmission of Middle Way teachings and covers the topic of provisional and definitive teachings, buddha-nature and ultimate truth. He also comments on Candrakīrti's interpretation of buddha-nature teachings as provisional in his auto-commentary. +
Though this is generally considered an important source text for the Madhayamaka teachings, it is quoted in the ''Uttaratantra'', though it is not explicitly cited as the source of the quotation. +