妙法蓮華經玄贊 5.196

5.196

贊曰：下第二念大乘因化。上思果化已不可得，應以因化，因化有三：一念初不能依大教行，二若起誹謗沈縈惡道，三念示眾苦密說大乘。此初也。是二種死三界之舍，唯有一介大乘正門為出之處。菩薩大性能具行之，二乘之性現熟不能依大教出，設為彼說彼不能行。不容彼行名為狹小，不容獨覺者行名狹，不容聲聞者行名小。譬如大海雖寬無量，不宿死屍亦名為窄，一乘因行雖廣無邊，不容二行故名狹小。

Commentary: Below is the second [section], considering transformation by means of the Mahāyāna causes. Above, having considered transformation through the fruit and found it unfeasible, he should transform them through the causes. Transformation through the causes has three parts: first, considering that they initially cannot practice in reliance on the great teaching; second, that if they give rise to slander, they will sink into and be entangled in the evil destinies; third, considering the manifestation of various sufferings to secretly expound the Mahāyāna. This is the first. / This house of the three realms of the two kinds of death has only a single correct gate of the Mahāyāna as the place of exit. Bodhisattvas of great capacity are able to practice it fully, but the nature of the two vehicles being currently matured, they cannot escape in reliance on the great teaching; even if it were expounded for them, they could not practice it. Being unable to accommodate their practice is called 'narrow and small'; not accommodating the practice of pratyekabuddhas is called 'narrow', and not accommodating the practice of śrāvakas is called 'small'. For example, though the great ocean is immeasurably broad, because it does not harbor dead corpses it is also called 'narrow'; although the causal practice of the Single Vehicle is boundlessly vast, because it does not accommodate the practices of the two [vehicles], it is called 'narrow and small'.