首楞嚴義疏注經 7.64

7.64

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.