Reference for Bava Metzia 39:8
וכל מעשה ב"ד הרי זה יחזיר: ההוא גיטא דאשתכח בי דינא דרב הונא דהוה כתיב ביה בשוירי מתא דעל רכיס נהרא אמר רב הונא
<b><i>GEMARA</i></b>. What are DOCUMENTS OF BERURIN? — Here [in Babylonia] it has been interpreted [as meaning] 'documents containing records of pleadings.'<span class="x" onmousemove="('comment',' Of litigants in a court of law, from [H] 'to make clear'. ');"><sup>22</sup></span> R. Jeremiah said: [Documents stating:] 'This party chose one [judge], and that party chose another [judge].'<span class="x" onmousemove="('comment',' I.e., documents recording the choice of judges by contending parties to decide their case, from [H] 'to select', 'to chose'. V. Sanh. 23a. ');"><sup>23</sup></span> OR ANY [OTHER] DEED ISSUED BY A COURT OF LAW, ONE SHALL RETURN. In the court of R. Huna there was once found a bill of divorcement<span class="x" onmousemove="('comment',' Endorsed by the court. Cf. supra, 18a and b. ');"><sup>24</sup></span> in which was written: 'In Shawire, the town which is situate by the canal Rakis.' Said R. Huna: