His right hand in the mudra of supreme generosity holds an arura. His left hand in meditation mudra holds a begging bowl.

His right hand is extended, palm outward, over his right knee in the gesture called supreme generosity. In it he holds the arura, or myrobalan, fruit. This plant represents all the best medicines. The position of his right hand and the arura which he holds represent the eradication of suffering, especially the suffering of sickness, using the means of relative truth. Sickness can be alleviated by adjusting the functioning of interdependent causes and conditions by the use of relative means within the realm of relative truth, such as medical treatment and so on. The giving of these methods is represented by the gesture of the Medicine Buddha’s right hand. 

His left hand rests in his lap, palm upward, in the gesture of meditative stability or meditation, which represents the eradication of sickness and suffering— and, indeed, the very roots of samsara— through the realization of absolute truth. From the point of view of either relative truth or absolute truth, the fundamental cause of sickness and suffering is a lack of contentment and the addictive quality of samsara. Therefore, to indicate the need for contentment, in his left hand he holds a begging bowl."