Reference for Shevuot 60:1
אי נמי לשודא דדייני
or, [with reference to] the discretion of the judges.<span class="x" onmousemove="('comment',' In a case which does not depend on witnesses or oath the judge may use his discretion. Here R. Joseph sent a message to R. Nahman that, if the case in which Ulla was involved was of such a nature, he should use his discretion in his favour, because he was a learned and righteous man, and was therefore more likely to be in the right.');"><sup>1</sup></span> Ulla said: The controversy<span class="x" onmousemove="('comment',' Between R. Judah and the Sages as to whether the litigants may sit in court.');"><sup>2</sup></span> is in regard to the litigants, but in regard to witnesses all agree that they mu stand, for it is written: And the two men shall stand.