Cundī Dhāraṇī is a popular Buddhist mantra in China. In the sūtra, after the Buddha speaks extensively about the various effects and benefits of reciting the CundīDhāraṇī. Many of the effects are purifying and uplifting in nature.
While Cundī is less well known in Tibetan Buddhism, she is revered in Tángmì or East Asian esoteric Buddhism. In China, she is known as ZhǔntíPúsà or Zhǔntí Fómǔ, "Junje" in Korean, while in Japan she is known as Jundei Kannon.
If there are bhikṣus, bhikṣuṇīs, upāsakas, or upāsikās who memorize and recite this dhāraṇī 800,000 times, their deadly karma in every place, created over innumerable eons, will be completely annihilated. In every place where they are born or reside, they will always meet buddhas and bodhisattvas. They will always have adequate resources and abilities to do as they wish. In any birth, they will always be able to leave the home life and will have the ability to maintain the pure precepts of a bodhisattva.
They will be born in human or heavenly realms, they will not fall into evil destinies, and they will always be protected by all the heavenly guardians. If there are virtuous house-holding men or women who recite and maintain it, their households will not encounter harm caused by disasters or suffering caused by an unexpected illness. Everything spoken to others will be truthful and accepted by them.