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SB 10.6.44

ya etat pūtanā-mokṣaṁ
 kṛṣṇasyārbhakam adbhutam
śṛṇuyāc chraddhayā martyo
 govinde labhate ratim
Synonyms: 
yaḥ — anyone who; etat — this; pūtanā-mokṣam — salvation of Pūtanā; kṛṣṇasya — of Kṛṣṇa; ārbhakam — the childhood pastimes; adbhutam — wonderful; śṛṇuyāt — should hear; śraddhayā — with faith and devotion; martyaḥ — any person within this material world; govinde — for the Supreme Person, Govinda, Ādi-puruṣa; labhate — gains; ratim — attachment.
Translation: 
Any person who hears with faith and devotion about how Kṛṣṇa, the Supreme Personality of Godhead, killed Pūtanā, and who thus invests his hearing in such childhood pastimes of Kṛṣṇa, certainly attains attachment for Govinda, the supreme, original person.
Purport: 

The incident in which the great witch attempted to kill the child but was killed herself is certainly wonderful. Therefore this verse uses the word adbhutam, meaning “specifically wonderful.” Kṛṣṇa has left us many wonderful narrations about Him. Simply by reading these narrations, as they are described in Kṛṣṇa, The Supreme Personality of Godhead, one gains salvation from this material world and gradually develops attachment to and devotion for Govinda, Ādi-puruṣa.

Thus end the Bhaktivedanta purports of the Tenth Canto, Sixth Chapter, of the Śrīmad-Bhāgavatam, entitled “The Killing of the Demon Pūtanā.”