As mentioned before, Nārada reached the cottage of Kṛṣṇa-dvaipāyana Vyāsa on the banks of the Sarasvatī just as Vyāsadeva was regretting his defects.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
तस्यैवं खिलमात्मानं मन्यमानस्य खिद्यतः । कृष्णस्य नारदोऽभ्यागादाश्रमं प्रागुदाहृतम्
tasyaivaṃ khilamātmānaṃ manyamānasya khidyataḥ | kṛṣṇasya nārado'bhyāgādāśramaṃ prāgudāhṛtam
SB 1.4.32