My dear King Parīkṣit, I have now described the wonderful power of Kṛṣṇa, as displayed when the Lord delivered the King of the elephants. O best of the Kuru dynasty, those who hear this narration become fit to be promoted to the higher planetary systems. Simply because of hearing this narration, they gain a reputation as devotees, they are unaffected by the contamination of Kali-yuga, and they never see bad dreams.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
एतन्महाराज तवेरितो मया कृष्णानुभावो गजराजमोक्षणम् । स्वर्ग्यं यशस्यं कलिकल्मषापहं दुःस्वप्ननाशं कुरुवर्य शृण्वताम्
etanmahārāja taverito mayā kṛṣṇānubhāvo gajarājamokṣaṇam | svargyaṃ yaśasyaṃ kalikalmaṣāpahaṃ duḥsvapnanāśaṃ kuruvarya śṛṇvatām
SB 8.4.14