The regions of happiness which represent the results or rewards of virtue are not eternal, for they are destined to come to an end. Virtue, however, is eternal When the cause is eternal, why is the effect not so? The answer to this is as follows. Only that virtue is eternal which is not prompted by the desire of fruit or reward.
अध्रुवो हि कथं लोकः स्मृतो धर्मः कथं ध्रुवः। यत्र कालो ध्रुवस्तात तत्र धर्मः सनातनः॥