Although Kṛṣṇa is master, but He became a servant. Just like Kṛṣṇa, when He was playing as a child of Mother Yaśodā, so He was taken with stick, "Kṛṣṇa, if you become again very naughty, then see the stick." So Kṛṣṇa used to cry. There are very nice verses in the Kuntī's prayer, that "The whole universe is afraid of Kṛṣṇa, and Kṛṣṇa is afraid by the stick of Mother Yaśodā." (laughter) Just see. This is Kṛṣṇa. This is spiritual world. When Kṛṣṇa was a little boy playing, Nanda Mahārāja, father of Kṛṣṇa . . . Yaśodā and Nanda Mahārāja, they are foster father and mother. Real mother, father is Vasudeva and Devakī. So Nanda Mahārāja came within the house and saw little Kṛṣṇa, "Yes." He was playing. So Nanda Mahārāja challenged Yaśodāmāyi, "Your Kṛṣṇa can do something work?" "Oh, yes, why not? He can do anything." Immediately, Nanda . . . Yaśodā-mātā, Mother Yaśodā, ordered Kṛṣṇa, "Just carry the wooden slipper of Your father and go there." So Kṛṣṇa immediately took the slipper on His head and brought it to Mahārāja Nanda. Then Nanda Mahārāja said: "Oh, your Kṛṣṇa is very good. Come on, come on, come on." These were, that the childhood pastimes of Kṛṣṇa was enjoyed by the foster father and mother.
Therefore all the sages were surprised that, "What pious activities this Mother Yaśodā did that Kṛṣṇa is completely under her control? Completely." The supreme controller, īśvaraḥ paramaḥ kṛṣṇaḥ (Bs. 5.1). Kṛṣṇa is the supreme controller. There is no controller of Kṛṣṇa.