Om Mani Padme Hum


Om Mani Padme Hum is the most common mantra in Tibetan Buddhism. The precise meaning of the mantra is difficult to discern, however each of the six syllables is thought to correspond to the purification of one of the six earthly realms.
Purifies
Samsaric Realm
Om
bliss / pride
gods
Ma
jealousy /lust for entertainment
jealous gods
Ni
passion / desire
human
Pe
stupidity / prejudice
animal
Me
poverty / possessiveness
hungry ghost
Hung
aggression / hatred
hell

source: dharma-haven.org


"There is not a single aspect of the eighty-four thousand sections of the Buddha's teachings which is not contained in Avalokiteshvara's six syllable mantra "Om Mani Padme Hum", and as such the qualities of the "mani" are praised again and again in the Sutras and Tantras.... Whether happy or sad, if we take the "mani" as our refuge, Chenrezig will never forsake us, spontaneous devotion will arise in our minds and the Great Vehicle will effortlessly be realized."
Dilgo Khyentse Rinpoche
-- Heart Treasure of the Enlightened Ones
Quoted from
www.dharma-haven.org