淨名經集解關中疏 2.184

2.184

示入聲聞而為眾生說未聞法　五未二乘。肇曰。聲聞不從人聞不能自悟。況能為人說所未聞也。

"He demonstrates entering the śrāvaka vehicle yet preaches the unheard Dharma for sentient beings." Fifth, the two vehicles. Zhao says: "A śrāvaka cannot realize on his own without hearing it from another, much less preach what has not been heard for others."