Om Mani Padme Hum, ScriptPublic Domain
Om Mani Padme Hum (Sanskrit) or Om Mani Peme Hung (Tibetan) is the oldest and most well known mantra of Tibetan Buddhism. The mantra is associated with Avalokiteshvara Bodhisattva and means "Om, jewel in the lotus, hum."
The first syllable, OM, is not a word but an evocation of spiritual power and the presence of the absolute. It is known throughout Asia in several religions, especially Hinduism.