淨名經集解關中疏 1.269

1.269

是身如聚沫不可撮摩　此下十喻明空觀。身者因是妄惑果是偽報。觀察此理名悟空也。復次四大虛偽不真故空亦非毀滅。代謝之空哉。肇曰。撮摩聚沫之無實。以喻觀身之虛偽。此下至電喻明空義也。

"This body is like a cluster of foam, which cannot be grasped or rubbed." Below this are ten similes clarifying the contemplation of emptiness. The body has delusion as its cause and false retribution as its fruit; observing this principle is called 'awakening to emptiness.' Furthermore, the four great elements are illusory, deceptive, and untrue; hence they are empty, not merely empty through destruction and cyclical change. Sengzhao states: "That a cluster of foam cannot be grasped or rubbed reveals its lack of reality; this is used as a simile to contemplate the body's falsity. From here down to the simile of lightning clarifies the meaning of emptiness."