Commentary for Sanhedrin 3:7
גָּמְרוּ אֶת הַדָּבָר, הָיוּ מַכְנִיסִין אוֹתָן. הַגָּדוֹל שֶׁבַּדַּיָּנִים אוֹמֵר, אִישׁ פְּלוֹנִי אַתָּה זַכַּאי, אִישׁ פְּלוֹנִי אַתָּה חַיָּב. וּמִנַּיִן לִכְשֶׁיֵּצֵא אֶחָד מִן הַדַּיָּנִים לֹא יֹאמַר אֲנִי מְזַכֶּה וַחֲבֵרַי מְחַיְּבִין אֲבָל מָה אֶעֱשֶׂה שֶׁחֲבֵרַי רַבּוּ עָלָי, עַל זֶה נֶאֱמַר לֹא תֵלֵךְ רָכִיל בְּעַמֶּךָ (ויקרא יט), וְאוֹמֵר הוֹלֵךְ רָכִיל מְגַלֶּה סּוֹד (משלי יא):
When they (beth-din) finished the matter, they would bring them [the litigants] in. [For after hearing their claims, they would take them out so that they (beth-din) could deliberate and the litigants not hear who ruled liable and who not liable.] The senior judge would say: "So and so, you are not liable; so and so, you are liable." And whence is it derived that when one of the judges goes out, he should not say: "I found you not liable, but my colleagues found you liable. What can I do? They are the majority." From (Leviticus 19:16): "Do not go as a tale-bearer among your people," and (Proverbs 11:13): "He who reveals a secret is a tale-bearer."
Bartenura on Mishnah Sanhedrin
English Explanation of Mishnah Sanhedrin
The chief among the judges says: “You, so-and-so are not obligated”, or “You, so-and-so are obligated”.
And from where do we know that after one of the judges has gone out that he may not say, “I declared him not obligated and my colleagues declared him obligated, so what can I do since they outvoted me?” Of such a one it says, “Do not go about as a talebearer amongst your people” (Lev. 19:16) and it also says, “He that goes about as a talebearer reveals secrets” (Proverbs 11:13).
Mishnah seven describes the court procedures at the end of the trial.
At the end of the trial, when the judges have reached their verdict the most important of them would announce whether or not the defendant was obligated to pay the plaintiff. In addition the mishnah warns judges that when the trial is completed the judge who disagreed with the verdict of the majority may not walk out and announce to the public his disagreement. Such a person is considered to be the type of “talebearer” censured by the Torah.