大般涅槃經義記 3.275

3.275

法中三句：初言「我者即如來藏」指斥我體，望直說我懼同情取，以是義故對藏以說。如來藏者佛性異名，論其體也是真識心，於此心中該含法界恒沙佛法，故名為藏。又為無量煩惱所藏亦名為藏，如來法身蘊此藏中名如來藏。又此藏中出生如來，是故亦名為如來藏。

In the dharma, there are three clauses: First, the words 'The self is just the tathāgatagarbha' directly point to the substance of the self. If one spoke straightforwardly of the self, one feared that people would grasp it with ordinary sentiments; for this reason, it is explained in terms of the garbha. 'Tathāgatagarbha' is another name for buddha-nature; discussing its substance, it is the true conscious mind. Within this mind, the dharmas of the Buddha as numerous as the sands of the Ganges in the dharmadhātu are contained, and hence it is called a storehouse (garbha). Furthermore, because it is concealed by immeasurable afflictions, it is also called a storehouse; the Tathāgata's dharmakāya being stored within this storehouse is called the tathāgatagarbha. Moreover, from this storehouse the Tathāgata is born, and for this reason it is also called the tathāgatagarbha.