Mahabharata 12.86.8
अष्टाभिश्च गुणैर्युक्तं सूतं पौराणिकं चरेत्पञ्चाशद्वर्षवयसं प्रगल्भमनसूयकम्
aṣṭābhiśca guṇairyuktaṃ sūtaṃ paurāṇikaṃ caretpañcāśadvarṣavayasaṃ pragalbhamanasūyakam
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book