請觀音經疏闡義鈔 2.33

2.33

經「六通無礙」，是果上之用也。六通，謂天眼、天耳、知他心、宿命、身如意、漏盡。

The sūtra's "unhindered in the six superknowledges" is the functioning upon the fruition. The six superknowledges refer to the divine eye, the divine ear, knowing the minds of others, past lives, bodily psychic power at will, and the exhaustion of outflows.