The most powerful and intelligent Vyāsadeva called four of his disciples, O brāhmaṇa, and entrusted to each of them one of these four saṁhitās.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
तासां स चतुरः शिष्यानुपाहूय महामतिः । एकैकां संहितां ब्रह्मन्नेकैकस्मै ददौ विभुः
tāsāṃ sa caturaḥ śiṣyānupāhūya mahāmatiḥ | ekaikāṃ saṃhitāṃ brahmannekaikasmai dadau vibhuḥ
SB 12.6.51