Let a man meditate on the fivefold Sâman in all waters. When the clouds gather, that is the hinkâra; when it rains, that is the prastâva; that which flows in the east, that is the udgîtha; that which flows in the west, that is the pratihâra; the sea is the nidhana.

In plain words: A person should meditate on the five-part chant in all waters. The parts are clouds gathering, rain falling, rivers flowing east, rivers flowing west, and finally the sea.