Now with reference to the body. Rik is speech, Sâman breath. This Sâman (breath) rests on that Rik (speech). Therefore the Sâman is sung as resting on the Rik. Sâ is speech, ama is breath, and that makes Sâma.

In plain words: Now about the human body: the verse is like speech and the song is like breath, since breath rests on speech. Sa is speech and ama is breath, and together they make Sama.