金光明最勝王經疏 3.494

3.494

贊曰：正明方軌。有四：一令作意，即是加行并審決思，即應當策勵是。二明時節，晝夜六時，明動發思正起三業。此身意語，偏袒等是身業、一心專念是意業、口自陳說是語業。

The commentary says: Directly clarifying the procedures and rules. There are four: first, causing them to generate attention, which is the preliminary application along with deliberative and decisive volition—namely 'they ought to apply diligent effort'; second, clarifying the time period: 'the six periods of the day and night' clarifies the initiating volition properly giving rise to the trīṇi karmāṇi. These are body, mind, and speech: baring the shoulder and so forth is bodily karma; focusing single-mindedly is mental karma; personally declaring with one's own mouth is verbal karma.