大般涅槃經義記 7.134

7.134

後二一對破遣因緣假名我相，於內不見眾生之相，於外不見我所受用。上來觀察無我、我所通名我空，「見一切法同法性相」明見法空，法性本寂，今見色等同彼法性本來常寂，名見一切同法性相。此觀真諦。

The latter two are a pair that breaks down and dispels the marks of the self that are conventionally designated through causes and conditions: internally, one does not see the marks of sentient beings; externally, one does not see what is received and used by a self. The above contemplation of the absence of a self and of what belongs to a self is collectively called emptiness of self. "Seeing all dharmas as identical to the mark of the dharma-nature" clarifies seeing the emptiness of dharmas. The dharma-nature is fundamentally quiescent; now seeing form and so forth as identical to that dharma-nature, fundamentally and constantly quiescent, is called seeing all as identical to the mark of the dharma-nature. This is contemplating the true truth.