Oṃ maṇi padme hūṃ
(Sanskrit: ओं मणिपद्मे हूं) is the six-syllabled Sanskrit mantra particularly associated with the four-armed Shadakshari form of Avalokiteshvara (Tibetan Chenrezig, Chinese Guanyin), the bodhisattva of compassion. Mani means "jewel" or "bead" and Padma means "the lotus flower", the Buddhist Sacred Flower.
The mantra is especially revered by devotees of the Dalai Lama, as he is said to be an incarnation of Chenrezig or Avalokiteshvara.
It is commonly carved onto rocks or written on paper which is inserted into prayer wheels, said to increase the mantra's effects.