Once, Shiva and Parvati were having 'the product of information', which both Kartikeya and Ganesha needed to have. Thus, Lord Shiva tossed a test to the two his children soliciting them to take three rounds from the world and return.

 The person who might restore first would get the natural product. Kartikeya took off on his peacock yet Ganesha just had the little mice as his vehicle. So he hovered around his folks and revealed to them that his entire world lies in their feet. Shiva and Parvati were intrigued with their child's answer and Ganesha wound up getting the natural product!