起信論疏筆削記 6.33

6.33

疏二：初、釋一心具二門，又二：初、標也。一如來藏者，以二義不分，故云一也。若例言之，即染淨、凡聖、空有、理事等皆一也。此之一義，為顯不二，強名為一，非是數法，故經云：一亦不為一，為離諸數故。

The Commentary has two parts: first, explaining that the One Mind is endowed with two gates, which again has two parts: first, stating [the thesis]. "One tathāgatagarbha": because the two meanings are not divided, it is called "one." If spoken by analogy, defiled and pure, ordinary and noble, empty and existent, principle and phenomena, are all likewise one. This single meaning is provisionally called "one" to reveal non-duality; it is not a matter of numerical reckoning. Therefore, the sūtra says: "One is also not one, in order to be free of all numbers."