א עֲבֵרוֹת שֶׁבֵּין אָדָם לַחֲבֵרוֹ אֵין יוֹם הַכִּפּוּרִים מְכַפֵּר עַד שֶׁיְּפַיְּסֶנּוּ; אֲפִלּוּ לֹא הִקְנִיטוֹ אֶלָּא בִּדְבָרִים, צָרִיךְ לְפַיְּסוֹ; וְאִם אֵינוֹ מִתְפַּיֵּס בָּרִאשׁוֹנָה, יַחֲזֹר וְיֵלֵךְ פַּעַם שְׁנִיָּה וּשְׁלִישִׁית, וּבְכָל פַּעַם יִקַּח עִמּוֹ שְׁלֹשָׁה אֲנָשִׁים, וְאִם אֵינוֹ מִתְפַּיֵּס בִּשְׁלֹשָׁה פְּעָמִים אֵינוֹ זָקוּק לוֹ. מִיהוּ יֹאמַר אַחַר כָּךְ לִפְנֵי י' שֶׁבִּקֵּשׁ מִמֶּנּוּ מְחִילָה (מָרְדְּכַי דְּיוֹמָא וּמַהֲרִי"ל); וְאִם הוּא רַבּוֹ, צָרִיךְ לֵילֵךְ לוֹ כַּמָּה פְּעָמִים עַד שֶׁיִּתְפַּיֵּס. הַגָּה: וְהַמּוֹחֵל לֹא יִהְיֶה אַכְזָרִי מִלִּמְחֹל (מַהֲרִי"ל), אִם לֹא שֶׁמְּכַוֵּן לְטוֹבַת הַמְבַקֵּשׁ מְחִילָה (גְּמָרָא דְּיוֹמָא); וְאִם הוֹצִיא עָלָיו שֵׁם רַע, אֵינוֹ צָרִיךְ לִמְחֹל לוֹ. (מָרְדְּכַי וּסְמַ"ג וְהגה"מ פ"ב מֵהִלְכוֹת תְּשׁוּבָה וּמהרי"ו).
1 “A man should appease his friend (i.e., a person whom he wronged) on the Eve of Yom Kippur” - Containing four paragraphs. Yom Kippur does not atone for sins between a man and his comrad (fellow-man) until he conciliates him. Even if he angered him only in words, he is required to appease him (his fellow-man). And if at first he is not pacified, he (must) return and go to him a second and third time. Each time he should take three men with him, and if on the third time he does not become reconciled he (no longer) is obligated to him, (nevertheless afterwards he should say before ten (people) that he did request forgiveness from him), (מרדכי דיומא ומהרי״ל). If he (i.e., the person who was wronged) was his teacher, he must go to him many times until he becomes appeased. Rema: The person to forgive should not be cruel by refusing forgiveness (to the one seeking forgiveness), (מהרי״ל), unless his intent is for the good of the one requesting forgiveness, (גמרא דיומא). But if one caused him (the wronged person) a bad name, there is no necessity in forgiving him, (מרדכי וסמ״ק והגה״מ פ״ב מהלכות תשובה ומהרי״ו).