Mahabharata 12.59.90
अध्यायानां सहस्रैस्तु त्रिभिरेव बृहस्पतिःसंचिक्षेपेश्वरो बुद्ध्या बार्हस्पत्यं तदुच्यते
adhyāyānāṃ sahasraistu tribhireva bṛhaspatiḥsaṃcikṣepeśvaro buddhyā bārhaspatyaṃ taducyate
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book