Mahabharata 7.124.16

परं पुराणं पुरुषं पुराणानां परं च यत्प्रपद्यतस्तं परमं परा भूतिर्विधीयते

paraṃ purāṇaṃ puruṣaṃ purāṇānāṃ paraṃ ca yatprapadyatastaṃ paramaṃ parā bhūtirvidhīyate

Our plain-language meaning of this verse is waiting for scholar review.