仁王護國般若波羅蜜多經 2.58

2.58

"Bhagavat! I possess a dhāraṇī that can bestow empowerment and protection; it is the swift gate that all Buddhas originally practiced. If anyone hears it pass through their ears but once, all their sinful obstacles will be extinguished, how much more so if they recite and practice it until they are fluent! By the power of the Dharma, it will ensure that the land is forever free from manifold calamities."