首楞嚴義疏注經 7.64

7.64

四飯諸子及餘眷屬皆得出家，證小聞大不驚不怖。由攝受力成佛示滅，付囑未來，使吾道不墜地者，無非呪功矣。

The sons of the four [Śākya] kings and the other relatives all leave household life; realizing the small, they hear the great without alarm or fear. By the power of gathering, they achieve Buddhahood, display extinction, and entrust it to the future, ensuring that our path does not fall to the ground—all of this is nothing other than the merit of the mantra.