Bhumisparsa is the mudra of witness (earth - touching). The right arm is pendant over the right knee. The hand with the palm turned inward and all the gingers extended downward with the finger touching the louts throne. The left hand lies on the lap with palm upward. This gesture 'of touching the earth' or calling the earth to witness' commemorating Gautam Buddha's victory over temptation by the demon Mara.
This gesture is Characteristic of Dhyani Buddha Akshobhya as well as Shakyamuni.