The structure of this stone makes us suppose that this table was part of a more complex composition of bas-reliefs.
In esoteric Buddhism, the heart of beings is like a closed lotus: the lotus flowers flourish as the virtues of the Buddha develop.
Precisely for this reason in many representations the Buddha is seated on a completely disclosed lotus flower, as in this case.
We can also analyze the mudra of the hands, called Abhaya: this mudra is the gesture of courage, it shows the phase of Buddha's life immediately after the attainment of enlightenment.