首楞嚴義疏注經 7.15

7.15

"Ānanda, if such pure bhikṣus, bhikṣuṇīs, or white-robed dānapatis in the final age extinguish greed and lust in their minds, uphold the Buddha's pure precepts, generate bodhisattva vows within the bodhimaṇḍa, bathe upon entering and exiting, practice the Path throughout the six periods of the day, and thus remain sleepless for three times seven days, I will personally manifest my body before that person, rub their crown, and comfort them, causing them to attain awakening."