After consulting with his demoniac ministers, Kaṁsa instructed a witch named Pūtanā, who knew the black art of killing small children by ghastly sinful methods, to kill all kinds of children in the cities, villages and pasturing grounds. Such witches can play their black art only where there is no chanting or hearing of the holy name of Kṛṣṇa. It is said that wherever the chanting of the holy name of Kṛṣṇa is done, even negligently, all bad elements—witches, ghosts and dangerous calamities—immediately disappear. And this is certainly true of the place where the chanting of the holy name of Kṛṣṇa is done seriously—especially in Vṛndāvana when the Supreme Lord was personally present. Therefore, the doubts of Nanda Mahārāja were certainly based on affection for Kṛṣṇa. Actually there was no danger from the activities of Pūtanā, despite her powers. Such witches are called khecarī, which means they can fly in the sky. This black art of witchcraft is still practiced by some women in the remote northwestern side of India. They can transfer themselves from one place to another on the branch of an uprooted tree. Pūtanā knew this witchcraft, and therefore she is described in the Bhāgavatam as khecarī.
Pūtanā entered the county of Gokula, the residential quarter of Nanda Mahārāja, without permission. Dressing herself just like a beautiful woman, she entered the house of Mother Yaśodā. She appeared very beautiful, with raised hips, nicely swollen breasts, earrings, and flowers in her hair. She looked especially beautiful on account of her thin waist. She was glancing at everyone with very attractive looks and smiling face, and all the residents of Vṛndāvana were captivated. The innocent cowherd women thought that she was the goddess of fortune appearing in Vṛndāvana with a lotus flower in her hand. It seemed to them that she had personally come to see Kṛṣṇa, who is her husband. Because of her exquisite beauty, no one checked her movement, and therefore she freely entered the house of Nanda Mahārāja. Pūtanā, the killer of many, many children, found baby Kṛṣṇa lying on a small bed, and she could at once perceive that the baby was hiding His unparalleled potencies, which resembled fire covered by ashes. Pūtanā thought, "This child is so powerful that He can destroy the whole universe immediately."