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.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
य एतत्पूतनामोक्षं कृष्णस्यार्भकमद्भुतम् । शृणुयाच्छ्रद्धया मर्त्यो गोविन्दे लभते रतिम्
ya etatpūtanāmokṣaṃ kṛṣṇasyārbhakamadbhutam | śṛṇuyācchraddhayā martyo govinde labhate ratim
SB 10.6.44