
Om Mani Padme Hung
Jewel of Enlightenment is in the Heart Lotus
Om Mani Padme Hung
Tibetan Buddhists believe that saying the mantra (prayer), Om Mani Padme Hung, out loud or silently to oneself, invokes the powerful benevolent attention and blessings of Chenrezig, the embodiment of compassion.
Viewing the written form of the mantra is said to have the same effect - it is often carved into stones and placed where people can see them.
Spinning the written form of the mantra around in a Mani wheel (or prayer wheel) is also believed to give the same benefit as saying the mantra, and Mani wheels, small hand wheels and large wheels with millions of copies of the mantra inside, are found everywhere in the lands influenced by Tibetan Buddhism.
The Prayer Wheel: Spiritual Technology from Tibet.
It is said that all the teachings of the Buddha are contained in this mantra: Om Mani Padme Hung can not really be translated into a simple phrase or sentence.
The mantra originated in India; as it moved from India into Tibet, the pronunciation changed because some of the sounds in the Indian Sanskrit language were hard for Tibetans to pronounce.
Tibetan form Om Mani Peme Hung Mantra of Chenrezig
The mantra Om Mani Padme Hung is found written in two different ways in (and on) Mani wheels and on jewelry, etc.: in the ancient Indian Ranjana script and in Tibetan script:
Ranjana script

Tibetan script
