大乘義章 1.118

1.118

次辨其用。依前真實如來藏體，緣起集成生死涅槃，是其用也。如經中說「十二因緣，皆一心作。」又云「三界一心作。」復言「法身輪轉五道，名曰眾生。」此是真實起生死也。又如經中「如來藏性，顯成法身。」如是等義，起涅槃也。無我體相，麁況如是。

Next, the fourth [gate] clarifies its function. Based on the aforementioned real tathāgatagarbha essence, conditioned arising assembles and produces saṃsāra and nirvāṇa; this is its function. As a sūtra states: "The twelve links of conditioned arising are all created by the one mind." It also states: "The triple realm is created by the one mind." Furthermore, it states: "The dharmakāya, transmigration through the five destinies, is called a sentient being." This is the real giving rise to saṃsāra. Moreover, as in the sūtra: "The tathāgatagarbha nature is manifested as the dharmakāya." Meanings such as these are [the real] giving rise to nirvāṇa. The essence and characteristics of non-self are roughly like this.