觀音義疏 2.65

2.65

應以帝釋身者，此地居天主也，具云釋迦提桓因陀羅，釋迦言能，桓只是提婆，提婆即是天，因陀羅名主，能作天主。菩薩修難伏三昧，不取、不捨，說種種勝論，四句現身，以權引實。

"One who should be saved by the body of Śakra": this is the lord of the earth-dwelling gods. In full it is Śakro Devānām Indraḥ. 'Śakra' means capable; 'deva' is just deity; 'Indra' means lord; [thus,] 'capable of being the lord of gods'. The bodhisattva cultivates the samādhi of difficult-to-subdue, neither grasping nor relinquishing, preaches various discourses on victory, manifests a body through the four propositions, and leads to the real by means of the provisional.