"And what is the faculty of concentration? There is the case where a monk, a disciple of the noble ones, making it his object to let go, attains concentration, attains singleness of mind.
Why should "making it his object to let go" be translated as "making to-let-go be his object"?
Why does "it" refer to "to let go"?
Where can I learn the rule about this case?
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