楞伽阿跋多羅寶經註解 1.689

1.689

行空言陰離我我所者，陰是我所，性本離執。從陰成我，從我起行。因所者，因我所也，謂因我所起業，方便和合而生妄執，順性推求皆不可得，名行空也。

Regarding the emptiness of action, the phrase 'the aggregates are free from self and what belongs to self' means that the aggregates are what belongs to self, whose nature is originally free from clinging. From the aggregates the self is formed, and from the self action arises. 'Due to what' means due to what belongs to self; it means that due to what belongs to self, karma arises, and through skillful means coming together in combination, false grasping arises. Investigating in accordance with the nature, none can be found; this is called the emptiness of action.