瑜伽論記 8.159

8.159

第四明不自在行入無我行，基云：空無我二行何別，空者定於體，無我定於用，即計有體名有，以空遣之，執有用名我，以無我遣之。

Fourth, explaining the entry into the aspect of non-self through the aspect of non-mastery: Ji says: "What is the difference between the two aspects of emptiness and non-self? Emptiness determines the essence; non-self determines the function. That is, conceptualizing an existent essence is called 'existent', which is dispelled through emptiness; grasping at an existent function is called 'self', which is dispelled through non-self."