PURPORT

The word avyakta-mulam is significant here. Generally, no one can see the roots of a tree. But as far as the Lord is concerned, He is the root of Himself because there is no other separate cause of His standing but He Himself. In the Vedas it is said that the Lord is svasrayasraya; He is His own support, and there is no other support for Him. Therefore, avyakta means the Supreme Lord Himself and no one else.