"The hymn, which seeks to glorify Indus as the greatest of all rivers, enumerates two types of rivers – First, those which flow into the Indus, directly or through a tributary Second, those which do not flow into the Indus and reach the ocean or a desert lake independently. My hypothesis is that the hymn mentions each and every river in the first category, because of which even the smallest tributaries and sub-tributaries of Indus are mentioned."