Verse 3.14-15

Verse 3.14: “From food arise creatures; the origin of food is from rain:, from sacrifice rain is produced: Sacrifice has its origin from Karman (action).

Verse 3.15: Know that the source of Karman is in Brahman (= i. the Veda; ii. Primal Matter) and that Brahman (in both senses) has its source in the Akshara (Immutable Absolute Highest Brahman). Hence, the Brahman, which pervades all (this series), is ever dominant in the Sacrifice. (134)

Commentary called Jnaneshwari by Jnaneshwar:

All the living beings in this world grow on this food that itself springs from rains. The sacrifices are the means of bringing on of the rains—while sacrifices themselves are fruit of Karman (activism) which thus in its turn takes its origin from Brahman, which is revealed in Vedas. The Vedas are thus the manifestations of the Immutable Absolute (Higher Brahman) and therefore the entire universe immoveable as well as moveable is all primarily pervaded by the Supreme Spirit. Know ye, O husband of Subhadra, (Sister of Lord Krishna) that Sacrifices form the Kannan (duty) incarnate and therein dwells the Supreme in the form of the Sacred Vedas.