Śrīmad-Bhāgavatam · Text 11.16.32
Who is speaking and story frame
ओज: सहो बलवतां कर्माहं विद्धि सात्वताम् ।
सात्वतां नवमूर्तीनामादिमूर्तिरहं परा ॥ ३२ ॥
ojaḥ saho balavatāṁ
karmāhaṁ viddhi sātvatām
sātvatāṁ nava-mūrtīnām
ādi-mūrtir ahaṁ parā
Of the powerful I am bodily and mental strength, and I am the devotional activities of My devotees. My devotees worship Me in nine different forms, among which I am the original and primary Vāsudeva.
Read the purport on Vedabase.ioFrom Canto 10, chapter 14 onward, the translation and purports were completed by Śrīla Prabhupāda's disciples after his departure, and published by the Bhaktivedanta Book Trust.