Mahabharata 6.32.6

महर्षयः सप्त पूर्वे चत्वारो मनवस्तथामद्भावा मानसा जाता येषां लोक इमाः प्रजाः

maharṣayaḥ sapta pūrve catvāro manavastathāmadbhāvā mānasā jātā yeṣāṃ loka imāḥ prajāḥ

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