…While churning the butter, mother Yaśodā was singing about the childhood activities of Kṛṣṇa. It was formerly a custom that if one wanted to remember something constantly, he would transform it into poetry or have this done by a professional poet. It appears that mother Yaśodā did not want to forget Kṛṣṇa’s activities at any time. Therefore she poeticized all of Kṛṣṇa’s childhood activities, such as the killing of Pūtanā, Aghāsura, Śakaṭāsura and Tṛṇāvarta, and while churning the butter, she sang about these activities in poetical form. This should be the practice of persons eager to remain Kṛṣṇa conscious twenty-four hours a day. This incident shows how Kṛṣṇa conscious mother Yaśodā was. To stay in Kṛṣṇa consciousness, we should follow such persons. (SB 10.9.1-2)
full text and purport More
The Hare Krishna Movement 