盂蘭盆經讚述 1.18

1.18

[The sūtra says:] "'I shall now explain the Dharma of rescue to cause all those in difficulty to be freed from grief and suffering.'" / The commentary says: This is the fifth, promising to explain the method of rescue. Why did the Tathāgata need to promise an explanation? Truly, because Maudgalyāyana's grief had shaken the cold springs and his weeping harmed the trees on the burial mounds, and he hurried back to report everything, which was truly lamentable. Therefore, he promised the explanation beforehand and rescued her afterward.