四分律行事鈔資持記 1.1106

1.1106

三明作法，設教中。標云四種，對首本制，常途所行；餘三緣開，心念開無人，忘成開非心，及界開奔赴。

Under 'Three: Clarifying the ritual procedure': In setting forth the teaching, it notes that there are four kinds: face-to-face is the root regulation, the commonly practiced way; the remaining three are exceptions based on circumstances: mental intention is an exception when no one is present; unmindful completion is an exception when there is no intention; and reaching the boundary is an exception when rushing to arrive.