Abhaya in Sanskrit means fearlessness. Thus
this mudra symbolizes protection, peace, and the dispelling of fear. It is made with the right hand raised to shoulder height, the arm crooked, the palm of the hand facing outward, and the fingers upright and joined. The left hand hangs down at the side of the body. In Thailand, and especially in Laos, this mudra is associated with the movement of the walking Buddha (also called 'the Buddha placing his footprint'). It is nearly always used in images showing the Buddha upright, either immobile with the feet joined, or walking.
This mudra, which initially appears to be a natural gesture, was probably used from prehistoric times as a sign of good intentions - the hand raised and unarmed proposes friendship, or at least peace; since antiquity, it was also a gesture asserting power, as with the magna manus of the Roman Emperors who legislated and gave peace at the same time.
Gandhara BuddhaBuddhist tradition has an interesting legend behind this mudra:
Devadatta, a cousin of the Buddha, through jealousy caused a schism to be caused among the disciples of Buddha. As Devadatta's pride increased, he attempted to murder the Buddha. One of his schemes involved loosing a rampaging elephant into the Buddha's path. But as the elephant approached him, Buddha displayed the Abhaya mudra, which immediately calmed the animal. Accordingly, it indicates not only the appeasement of the senses, but also the absence of fear.
In Gandhara art, this mudra was sometimes used to indicate the action of preaching. This is also the case in China where it is very commonly found in images of the Buddha, mainly in the Wei and Sui eras (fourth to seventh centuries).
The Abhaya mudra is displayed by the fifth Dhyani Buddha, Amoghasiddhi. He is also the Lord of Karma in the Buddhist pantheon. Amoghasiddhi helps in overcoming the delusion of jealousy. By meditating on him, the delusion of jealousy is transformed into the wisdom of accomplishment. This transformation is hence the primary function of the Abhaya mudra.
http://www.exoticindia.com/article/mudras/aff10490
