Mahabharata 12.231.4

मनसश्चेन्द्रियाणां चाप्यैकाग्र्यं समवाप्यतेयेनोपायेन पुरुषैस्तच्च व्याख्यातुमर्हसि

manasaścendriyāṇāṃ cāpyaikāgryaṃ samavāpyateyenopāyena puruṣaistacca vyākhyātumarhasi

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