維摩經略疏垂裕記 1.113

1.113

問：方便土中已無通惑，何須通教橫竪二義皆云用通？答：大乘初門調機入頓，為知故學，非用斷惑。如諸聲聞至方等會，被彈斥已皆習通門，若至方等必到法華。在方便土須通教者，此約不入方等會人。

Question: In the expedient land, common delusions no longer exist; why do both the horizontal and vertical senses require the Common teaching to be used? Answer: As the initial gate of the Great Vehicle, it tempers capacities to enter the sudden; one learns it in order to know, not using it to sever delusions. Just as when the various śrāvakas came to the Vaipulya assembly, having been reproached, they all practiced the Common gate; if they came to the Vaipulya, they would definitely reach the Lotus. Those who require the Common teaching in the expedient land are those who did not enter the Vaipulya assembly.