Śrīmad-Bhāgavatam · Text 4.29.83
Who is speaking and story frame
एतदध्यात्मपारोक्ष्यं गीतं देवर्षिणानघ ।
य: श्रावयेद्य: शृणुयात्स लिङ्गेन विमुच्यते ॥ ८३ ॥
etad adhyātma-pārokṣyaṁ
gītaṁ devarṣiṇānagha
yaḥ śrāvayed yaḥ śṛṇuyāt
sa liṅgena vimucyate
My dear Vidura, one who hears this narration concerning the understanding of the living entity’s spiritual existence, as described by the great sage Nārada, or who relates it to others, will be liberated from the bodily conception of life.
Read Śrīla Prabhupāda's purport on Vedabase.io