In this sacrifice, a horse of a particular colour was consecrated by the performance of certain rites; it was then let loose to wander at will for a specified period. The horse was followed by the representative of the king and his army. If the horse retumed triumphantly, the king was declared the greatest monarch, but if the horse failed in its mission, the king perfocming the sacrifice was ridiculed. One who succeeded in the performance of such a sacrifice for a hundred-times, enabled the king to overthrow the throne of Indra and become the monarch of the universe and also gods.
1. Kohli, Surindar Singh, Dictionary of Mythological References in Guru Granth Sahib, 1993