大般涅槃經集解 18.79

18.79

案道生曰：種相者，自然之性也。佛性必生於諸佛，向云我即佛藏，今云佛性即我，互其辭耳。

Daosheng states: The seed-character is the nature of spontaneity. The buddhadhātu must be born in the Buddhas. Earlier it was said that the self is the Buddha's storehouse; now it says that the buddhadhātu is the self—these are merely reciprocal expressions.