Panchatantra story-The bird with the two necks
Long time ago there lived a special kind of bird which had two necks but shared a common stomach.
One day, one of the heads found a jar of nectar, and on seeing this the other head also wanted to taste the nectar but the first neck refused to let it have it. Enraged, the other neck soon found a jar of poison and consumed it. The poison reached the common stomach and both the necks died.
Story moral: You should Share good things with others.