維摩經玄疏 6.118

6.118

還將一家明三種二諦，對之冷然，義推可解。今經所明，備有三種二智，為國王、長者、諸聲聞，用化他二智；為諸菩薩，用自行、化他二智；杜口無言，是自行二智也。

If one takes our school's clarification of the three kinds of two truths and matches it against these, it is completely clear, and its meaning can be understood by deduction. What the present sūtra clarifies is fully endowed with the three kinds of two knowledges: for kings, elder householders, and the various śrāvakas, it employs the two knowledges for converting others; for the bodhisattvas, it employs the two knowledges for one's own practice and converting others; shutting the mouth and speaking no words is the two knowledges for one's own practice.