首楞嚴義疏注經 4.465

4.465

「如身覺觸，識於違順，合時能覺，離中不知，離一合雙，驗於身根三分闕一，當知身唯八百功德。」

"As when the body perceives contact, recognizing what is adverse or agreeable: it can perceive at the time of joining, but in separation it does not know. Separation is single and joining is dual; examining the body faculty, three parts lack one. You should know that the body has only eight hundred virtues."