Mahabharata 12.86.18

ततः साक्षिबलं साधु द्वैधे वादकृतं भवेत्असाक्षिकमनाथं वा परीक्ष्यं तद्विशेषतः

tataḥ sākṣibalaṃ sādhu dvaidhe vādakṛtaṃ bhavetasākṣikamanāthaṃ vā parīkṣyaṃ tadviśeṣataḥ

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