妙法蓮華經玄贊 4.112

4.112

贊曰：此釋前標，會於已前，汝根未熟未悟大乘不堪為說，汝今根熟正是其時，故為說也。同〈化城品〉云「諸比丘！若如來自知涅槃時到，眾又清淨信解堅固、了達空法深入禪定，便集諸菩薩及聲聞眾為說是經，世間無有二乘而得滅度，唯一佛乘得滅度耳」。

The commentary says: This explains the preceding proposition, reconciling with the past: because your faculties were not yet mature and you had not awakened to the Great Vehicle, you were not fit for it to be expounded to you; now that your faculties are mature, it is precisely the time, therefore it is expounded for you. This is the same as the 'Conjured City Chapter' stating: 'Monks! If the Tathāgata knows of himself that the time for nirvāṇa has arrived, that the assembly is pure, firm in faith and understanding, fully comprehending the Dharma of emptiness, and deeply entering dhyāna-meditation, he then gathers the assembly of bodhisattvas and śrāvakas to expound this sūtra for them: in the world there are not two vehicles by which extinction is attained; only by the Single Buddha Vehicle is extinction attained.'