In succession, O King, the great sage Nārada instructed Śrīmad-Bhāgavatam unto the unlimitedly powerful Vyāsadeva, who meditated in devotional service upon the Supreme Personality of Godhead, the Absolute Truth, on the bank of the river Sarasvatī.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
यदुताहं त्वया पृष्टो वैराजात्पुरुषादिदम् । यथाऽऽसीत्तदुपाख्यास्ये प्रश्नानन्यांश्च कृत्स्नशः
yadutāhaṃ tvayā pṛṣṭo vairājātpuruṣādidam | yathā''sīttadupākhyāsye praśnānanyāṃśca kṛtsnaśaḥ
SB 2.9.45