Śrīmad-Bhāgavatam · Text 10.2.16
Who is speaking and story frame
भगवानपि विश्वात्मा भक्तानामभयङ्कर: । आविवेशांशभागेन मन आनकदुन्दुभे: ॥ १६ ॥
bhagavān api viśvātmā
bhaktānām abhayaṅkaraḥ
āviveśāṁśa-bhāgena
mana ānakadundubheḥ
Thus the Supreme Personality of Godhead, who is the Supersoul of all living entities and who vanquishes all the fear of His devotees, entered the mind of Vasudeva in full opulence.
Read Śrīla Prabhupāda's purport on Vedabase.io