Mahabharata 12.198.4

यदा निर्गुणमाप्नोति ध्यानं मनसि पूर्वजम्तदा प्रज्ञायते ब्रह्म निकष्यं निकषे यथा

yadā nirguṇamāpnoti dhyānaṃ manasi pūrvajamtadā prajñāyate brahma nikaṣyaṃ nikaṣe yathā

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