ב מִן הַתּוֹרָה אֵין צָרִיךְ לְקַדְּשָׁהּ, אֶלָּא בָּא עָלֶיהָ. וַחֲכָמִים תִּקְּנוּ שֶׁלֹּא יָבֹא עָלֶיהָ עַד שֶׁיְּקַדְּשֶׁנָּה בִּפְנֵי עֵדִים, בְּכֶסֶף אוֹ בִּשְׁטָר, וְהוּא נִקְרָא מַאֲמָר. הַגָּה: וְאִם קִדְּשָׁהּ בִּשְׁטָר, נַמֵּי מִקְּרֵי מַאֲמָר (מ"מ פ"ב). וַאֲפִלּוּ נָתַן לָהּ פְּרוּטָה וְאָמַר לָהּ: הֲרֵי אַתְּ מְקֻדֶּשֶׁת לִי בְּזוֹ וּבְקִדּוּשֵׁי אָחִי, הֲרֵי זוֹ מְקֻדֶּשֶׁת, דְּהָוֵי כְּמִלְוֶה וּפְרוּטָה (רִיבָ"שׁ סִימָן קס"ב). וּצְרִיכָה גַּם כֵּן חֻפָּה אַחַר קִדּוּשִׁין, כְּמוֹ שְׁאָר אִשָּׁה. וְיָכוֹל לַעֲשׂוֹת מַאֲמָר עַל יְדֵי שָׁלִיחַ, כְּמוֹ בִּשְׁאָר קִדּוּשִׁין (שָׁם סִימָן א'). וְאִם בָּא עָלֶיהָ בְּלֹא מַאֲמָר, קָנָה, וְאֵין צָרִיךְ לַחֲזֹר וּלְקַדֵּשׁ, וּמַכִּין אוֹתוֹ מַכַּת מַרְדּוּת. וְדַוְקָא שֶׁבָּא עָלֶיהָ בִּפְנֵי עֵדִים:
2 According to the Torah, he doesn't need to marry her, rather "come unto her" (have relations). And the Rabbis decreed that he shouldn't "come unto her" until he marries her in front of witnesses, with money or document, and that's called Ma'amar. Ram"a: And if he marries her with a document, that's also called Ma'amar. And even if he gave to her a peruta and says to her, "Behold you are married to me with this and with my brother's marriage," behold [she] is married, since it's like a loan and a peruta (Riva"sh Siman 162). And she also needs the wedding canopy after the marriage, like 0ther woman. And he can do Ma'amar through an agent, like other marriages (ad loc Siman 1). And if he comes unto her without Ma'amar, he acquires her, and he doesn't have to redo and marry her, and we whip him rebellious lashes. Ram"a: And specifically when he comes unto her in front of witnesses.