仁王護國般若波羅蜜多經疏 2.38

2.38

The commentary states: "Emptiness of prajñāpāramitā" is the emptiness of contemplative cognition. "Emptiness of cause" means that all bodhisattvas and others prior to equal awakening are entirely empty. "Emptiness of the buddha fruition" means that all the unshared dharmas possessed by all buddhas, such as the powers and fearlessnesses, are empty because their essence is quiescent. As for "empty because of the emptiness of emptiness," the *Mahāprajñāpāramitopadeśa* states: "'Emptiness of emptiness' means that first one uses the various emptinesses to refute all internal and external phenomena as empty, and then one uses this emptiness to refute those preceding emptinesses; this is called the emptiness of emptiness."