Yashoda had tied up Krishna after a long chase, to a big wooden grinding mortar (okhli) to punish him for his mischief. Within no time Krishna, who was still a toddler began to pull the okhli. The okhli got stuck between two trees, so he pulled harder and made the trees fall. Those trees were actually Kubera's (god of wealth's) sons in their previous life who were cursed by Narada Muni. When Krishna pulled down the trees, they got liberated from their curse.
This scene consists of dolls of toddler Krishna tied to the okhli, the two gandharvas, two trees.
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