18כֵּיצַד. הָאוֹמֵר לְאִשָּׁה הֲרֵי אַתְּ מְקֻדֶּשֶׁת לִי עַל מְנָת שֶׁתִּתְּנִי לִי מָאתַיִם זוּז. הֲרֵי זֶה גִּטֵּךְ עַל מְנָת שֶׁתִּתְּנִי לִי מָאתַיִם זוּז. הֲרֵי חָצֵר זוֹ נְתוּנָה לִיךְ בְּמַתָּנָה עַל מְנָת שֶׁתִּתְּנִי לִי מָאתַיִם זוּז. הֲרֵי תְּנָאוֹ קַיָּם וְנִתְקַדְּשָׁה אוֹ נִתְגָּרְשָׁה וְזָכְתָה זוֹ בֶּחָצֵר וְהֵם יִתְּנוּ הַמָּאתַיִם זוּז. וְאִם לֹא נָתְנוּ לֹא תִּהְיֶה זוֹ מְקֻדֶּשֶׁת וְלֹא מְגֹרֶשֶׁת וְלֹא תִּזְכֶּה זוֹ בֶּחָצֵר. וְאַף עַל פִּי שֶׁלֹּא כָּפַל תְּנָאוֹ וְאַף עַל פִּי שֶׁהִקְדִּים הַמַּעֲשֶׂה לַתְּנַאי וְנָתַן הַקִּדּוּשִׁין אוֹ הַגֵּט בְּיָדָהּ וְהֶחֱזִיקָה זוֹ בֶּחָצֵר וְאַחַר כָּךְ הִשְׁלִים תְּנָאוֹ. שֶׁהֲרֵי כְּשֶׁיִּתְקַיֵּם הַתְּנַאי תִּזְכֶּה זוֹ בֶּחָצֵר וְתִתְקַדֵּשׁ זוֹ וְתִתְגָּרֵשׁ מִשָּׁעָה רִאשׁוֹנָה שֶׁבָּהּ נַעֲשָׂה הַמַּעֲשֶׂה כְּאִלּוּ לֹא הָיָה שָׁם תְּנַאי כְּלָל:
What is implied? When [a man] tells a woman: "Behold, you are consecrated to me on condition that you give me 200 zuz," "here is your get on condition that you give me 200 zuz," or "this courtyard is given to you as a present on condition that you give me 200 zuz," the stipulation is binding. She is consecrated or divorced, or she acquires the field, but she must give the 200 zuz. If she does not give [the money], she will not be consecrated or divorced, nor will she acquire the field. [The above applies] even when the man did not make a twofold condition, and even though he performed the deed before stating the condition - i.e., he placed the kiddushin or the get in her hand or let her take possession of the courtyard, and then completed [the statement of] his stipulation. [The rationale for these leniencies is that] when the stipulation is fulfilled, she retroactively either acquires the field or is consecrated or divorced from the time the deed was performed, as if a stipulation had never been made at all.