Here is the basic story as taught by Kaili'ohe Kame'ekua.
The Bowl of Light
Each child born has at birth, a Bowl of Perfect Light.
If he tends his Light it will grow in strength and he can do all things — swim with the shark, fly with the birds, know and understand all things.
If, however, he became envious or jealous he drops a stone into his Bowl of Light and some of the Light goes out.
Light and the stone cannot hold the same space.
If he continues to put stones in the Bowl of Light, the Light will go out and he will become a stone.
A stone does not grow, nor does it move.
If at any time he tires of being a stone, all he needs to do is turn the bowl upside down and the stones will fall away and the Light will grow once more.
from Tales from the Night Rainbow by Pali Lee and Koko Willis