In Mahayana and Vajrayana Buddhism, a dharani is a short, Sanskrit language text or spell-like formulas thought to have protective power when written or recited out loud, often as part of a ritual. Often inscribed on objects or at sacred sites, their power through the written physical presence is associated with long life, purification, and protection. Dharanis are similar to mantras, but usually longer. One important dharani is the Ushnishavijaya Dharani. The Pancharaksha is another important text that contains five dharanis of protection.