This work contains pith instructions on the ''Uttaratantra'' that synthesize the terminology and approaches of the Yogācāra and Mahāmudra traditions. +
This work presents a late (14th century) Kadampa view on the ''Ratnagotravibhāga'' and the associated buddha-nature teachings by an influential representative of this tradition, often referred to as the second Asaṅga (''thogs med gnyis pa''). +
According to Karl Brunnhölzl, "This sūtra’s presentation of buddha nature became the main scriptural basis for the discussion of tathāgatagarbha in China." Furthermore, he states, "In sum, the ''Mahāparinirvāṇasūtra'' discusses three very different meanings of all sentient beings’ possessing buddha nature—(1) all are endowed with an intrinsic pure nature of which they will become fully aware once what obscures it has been removed, (2) all possess a seed or potential for buddhahood, which will grow into its full fruition in the future once all necessary conditions are present, and (3) the mahāyāna path to buddhahood is open for all, and its result is definite if one follows this path." +
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 sūtra source for the seventh ''vajrapada'' discussed in the ''Ratnagotravibhāga'', the activities (''karman'' or ''phrin las''). This sūtra mainly underscores the point that the Buddha has no conceptual thoughts and the nature of the Buddha is eternal, permanent and immutable. Yet, the activities of the Buddha are said to appear spontaneously without any contrived thought in accordance with the needs of the sentient beings. Thus, sentient beings see the Buddha in different forms, colors and stages of life. Analogies such as a clear vaidurya stone taking the colors of the cloth on which it is placed, the sun, the moon, the earth, space, etc. are used to illustrate how different appearances and manifestations can take place without foregoing conceptual thought. The sūtra also lists the many achievements and merits such as ten powers, ten strengths, ten treasures and samādhis of the bodhisattva who follow a virtuous teacher. +
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. +
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. +
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. +
An important synoptic outline and commentary giving sūtra and tantra sources for the buddha-nature teachings, and containing clear positions of the author on buddha-nature. The author claims buddha-nature to be topic of ultimate nature, buddha-nature to be endowed the qualities of the buddha, and buddha-nature to be not defined as mere emptiness but rather awareness indivisible from dharmatā. +