In plain words
The Lord of all beings. God is the One who is in all. He it is who is called purāṇa. Anuśāsitam. That means: in the world there are punishments, some for certain wrongs, some for certain faults and sins. Śāstra is what lays down the rule. When someone commits a theft, they take him, put him in jail and LOCK him in. They have bound only the body; no one can bind his Manas. His Manas roams everywhere. It goes to his home. It goes to his friend's home. Wherever you look, the Manas roams. The one who binds the body is the ruler. The one who binds the Manas is the anuśāsita. That means He Himself is God. How does He exist? He is in the light of the sun. In the Manas of all He is there as the form of Buddhi. The ṛṣis of that time did tapas, came back to the world and said, "We have found God." Where did they find Him? They found Him beyond tamas. They found Him beyond the darkness called Ajñāna. Not in the worldly universe. Not in the material universe. Not in the universe of nature. Not in the gross universe. We recognised Him in the inner feeling. In every man He is shining with splendour behind Ajñāna. When man lives as man, when he lives as a human being, he himself becomes Mādhava. Only then does he become a substance that does not spoil, like gold. If you take a seed and put it in the earth, after some time a change may come. But gold does not change, however long it stays in the earth. However much you burn it, it turns into pure gold, never into dross. However much you refine the Manas of man, it grows purer and purer; its brightness never lessens. The more it is refined, the more its purity keeps growing. But brass is not like that. To look at, the two seem just the same. Salt and camphor look alike, but look closer and closer and their tastes are different. We must not be like men only in looks.
All the Śrutis keep teaching such truths. This alone is the path for all. This alone is the support of all beings.