Śrīmad-Bhāgavatam · Text 2.7.36
Who is speaking and story frame
कालेन मीलितधियामवमृश्य नृणां
स्तोकायुषां स्वनिगमो बत दूरपार: ।
आविर्हितस्त्वनुयुगं स हि सत्यवत्यां
वेदद्रुमं विटपशो विभजिष्यति स्म ॥ ३६ ॥
kālena mīlita-dhiyām avamṛśya nṝṇāṁ
stokāyuṣāṁ sva-nigamo bata dūra-pāraḥ
āvirhitas tv anuyugaṁ sa hi satyavatyāṁ
veda-drumaṁ viṭa-paśo vibhajiṣyati sma
The Lord Himself in His incarnation as the son of Satyavatī [Vyāsadeva] will consider his compilation of the Vedic literature to be very difficult for the less intelligent persons with short life, and thus He will divide the tree of Vedic knowledge into different branches, according to the circumstances of the particular age.
Read Śrīla Prabhupāda's purport on Vedabase.io