This is a mantra, Vedic mantra: "The Supreme Lord is worshiped by all the demigods," yaṁ brahmā varuṇendra-rudra stunvanti divyaiḥ stavaiḥ. Varuṇa, Indra and other demigods, even Lord Śiva or Lord Brahmā. . . Śiva-viriñci-nutam (SB 11.5.33): "He is worshiped by Śiva and Viriñci." Viriñci means Lord Brahmā. So the only Lord, master, is Kṛṣṇa. I have explained, ekale īśvara kṛṣṇa (CC Adi 5.142). Īśvara, the supreme īśvara, controller, is Kṛṣṇa. And He is worshiped by. . . Yaṁ brahmā varuṇendra-rudra stunvanti divyaiḥ stavaiḥ. He is the objective of worshiping.
So dhyānāvasthita-manasā. . . dhyānāvasthita-manasā yaṁ paśyanti yoginaḥ. Yogis, they are desirous of mystic power, eight kinds of mystic power. They also meditate on the Supreme Lord. And the feature of the Supreme Lord on which the yogīs meditate by concentrating their mind is called Aniruddha. Saṅkarṣaṇa, Aniruddha. . . Vāsudeva, Saṅkarṣaṇa, Aniruddha, Pradyumna. So this is described. Aniruddha is the Deity of the mind, and mind is the central sense of all senses. Indriyāṇi parāṇy āhur indriyebhyaḥ paraṁ manaḥ (BG 3.42). In the material conception of life the senses are very prominent. So long we are under the bodily concept of life, our objective is to satisfy the senses. But the master of the senses is the mind, and the controlling Deity of the mind is Aniruddha. Therefore God's another name is Hṛṣīkeśa. And bhakti means to serve Hṛṣīkeśa, because He is the proprietor of the senses.
Here it is said, yad hy aniruddhākhyaṁ hṛṣīkāṇām adhīśvaram. Hṛṣīka. Hṛṣīka means senses, and another name of God, or Kṛṣṇa, or Aniruddha, is Hṛṣīkeśa. Senayor ubhayor madhye. . . (BG 1.21). The Hṛṣīkeśa name is there in the Bhagavad-gītā. Hṛṣīkeśa means hṛṣīkāṇām adhīśvaram. So practically, the senses which you are using, the real proprietor is Aniruddha, or the Supreme Personality of Godhead. You can utilize the instrument. . . Just like you hire some instrument to use it for some purpose, but the instrument belongs to somebody else, similarly, our the instrument, the karaṇa, the means of working, or instrument, as you say—the proprietor is Hṛṣīkeśa, or Aniruddha. So we are now utilizing instruments without fulfilling the desire of Aniruddha, or the Hṛṣīkeśa. That means we are using it for sense gratification unlawfully. Therefore we are becoming implicated in sinful activities. (aside:) Who is talking this side? Stop them. So therefore bhakti means that when you don't use the hṛṣīka, or the senses, for any other purpose than to serve the Hṛṣīkeśa, that is called bhakti. Hṛṣīkeṇa hṛṣīkeśa sevanaṁ bhaktir ucyate (CC Madhya 19.170). Hṛṣīkāṇām adhīśvaram.
Actually, the proprietor of the senses is Aniruddha, the Supreme Personality of Godhead. There is no difference between Kṛṣṇa and His expansion.