ב אָסוּר לוֹ לָרֹק; וְאִם אִי אֶפְשָׁר לוֹ שֶׁלֹּא לָרֹק, מַבְלִיעוֹ בִּכְסוּתוֹ בְּעִנְיָן שֶׁלֹּא יְהֵא נִרְאֶה; וְאִם הוּא אִסְטְנִיס, (פי' שֶׁאֵינוֹ יָכוֹל לִרְאוֹת דְּבַר מִאוּס), וְאֵינוֹ יָכוֹל לְהַבְלִיעוֹ בִּכְסוּתוֹ, זוֹרְקוֹ לַאֲחוֹרָיו. וְאִם אִי אֶפְשָׁר לְזָרְקוֹ לַאֲחוֹרָיו, זוֹרְקוֹ לִשְׂמֹאלוֹ, אֲבָל לֹא לִימִינוֹ; וְכָל שֶׁכֵּן לְפָנָיו, דְּאָסוּר, (הר"י פ' מִי שֶׁמֵּתוֹ). (וְהָא דִּלְקַמָּן בְּרֵישׁ סי' קכ"ג שֶׁהוֹפֵךְ פָּנָיו לְצַד שְׂמֹאלוֹ תְּחִלָּה, שֶׁהוּא יָמִין שֶׁל הָקָבָּ"ה, י"ל הַטַּעַם כֵּיוָן שֶׁמֵּעוֹלָם לֹא יָרְדָה הַשְּׁכִינָה לְמַטָּה מי' אִם כֵּן אֵין הַשְּׁכִינָה כְּנֶגֶד הַמִּתְפַּלֵּל, וּלְפִיכָךְ חָלְקוּ כָּבוֹד לְיָמִין דִּידֵיהּ בִּרְקִיקָה שֶׁהִיא בִּשְׁעַת תְּפִלָּה אֲבָל כְּשֶׁפּוֹסֵעַ שְׁלֹשָׁה פְּסִיעוֹת, הָאָדָם מַרְחִיק עַצְמוֹ מִמְּקוֹם תְּפִלָּתוֹ וְהוּא כְּנֶגֶד הַשְּׁכִינָה, וּלְפִיכָךְ נוֹתֵן שָׁלוֹם לִשְׂמֹאלוֹ שֶׁאָז הוּא כְּנֶגֶד יְמִינוֹ שֶׁל הָקָבָּ"ה) (בֵּית יוֹסֵף בְּשֵׁם אָבִיו).
2 It is forbidden for one to spit [while praying the Amidah], and if it is impossible for one not to spit, one should absorb into one's clothing in such a way that it is not visible. And if one is sensitive [i.e. one cannot stand to see something disgusting] and one is not able to absorb it into one's clothing, one should cast it behind oneself. And if it's impossible to cast it behind oneself, one should cast it to one's left, but not to one's right and all the more so, in front of one is prohibited [Rabbeinu Yonah - (Tractate Berachot - Chapter 3) "Mi Shemeito"]. And this that [it says] below at the beginning of Orach Chayim 123, that [when taking 3 steps back at the end of the Amidah] one turns one's face to the left side first because that is the right [side] of the Holy One Blessed Be He [who is opposite one], it is possible to say the reason is since the Shekhina [the Indwelling Presence of Hashem] never goes below 10 [handbreadths], and if so, the Shekhina is not directly in front of the one praying, and therefore, they gave honor to the right [side] of the person in [regards to] spitting at the time of praying. But when stepping 3 steps back, the person is distancing oneself from the place of his prayers, and now one is opposite the Shekhina, and therefore he gives "Shalom" (i.e. one says the words "Oseh Shalom Bimromav" - "He who makes peace up above") to one's left, for then it is opposite the right of the Holy One Blessed Be He [Beit Yosef in the name of his father].