俱舍論頌疏論本 28.99

28.99

釋曰：空謂空非我者，空三摩地，謂空非我相應等持，空即空我所，非我空其我，故二行相俱得名空。

Explanation: 'Emptiness refers to empty and non-self': the samādhi of emptiness refers to the samādhi associated with [the aspects of] empty and non-self. 'Empty' empties what belongs to self; 'non-self' empties self itself; hence both aspects receive the name 'emptiness'.