Mahabharata 4.28.2
धर्मार्थसहितं श्लक्ष्णं तत्त्वतश्च सहेतुमत्तत्रानुरूपं भीष्मेण ममाप्यत्र गिरं शृणु
dharmārthasahitaṃ ślakṣṇaṃ tattvataśca sahetumattatrānurūpaṃ bhīṣmeṇa mamāpyatra giraṃ śṛṇu
Our plain-language meaning of this verse is waiting for scholar review.