Related for Kiddushin 3:2
הָאוֹמֵר לְאִשָּׁה, הֲרֵי אַתְּ מְקֻדֶּשֶׁת לִי עַל מְנָת שֶׁאֶתֵּן לָךְ מָאתַיִם זוּז, הֲרֵי זוֹ מְקֻדֶּשֶׁת וְהוּא יִתֵּן. עַל מְנָת שֶׁאֶתֵּן לָךְ מִכָּאן וְעַד שְׁלשִׁים יוֹם, נָתַן לָהּ בְּתוֹךְ שְׁלשִׁים, מְקֻדֶּשֶׁת. וְאִם לָאו, אֵינָהּ מְקֻדֶּשֶׁת. עַל מְנָת שֶׁיֶּשׁ לִי מָאתַיִם זוּז, הֲרֵי זוֹ מְקֻדֶּשֶׁת וְיֶשׁ לוֹ. עַל מְנָת שֶׁאַרְאֵךְ מָאתַיִם זוּז, הֲרֵי זוֹ מְקֻדֶּשֶׁת וְיַרְאֶה לָהּ. וְאִם הֶרְאָהּ עַל הַשֻּׁלְחָן, אֵינָהּ מְקֻדֶּשֶׁת:
If one said to a woman: "You are betrothed to me [with this p'rutah] on condition that I give you two hundred zuz, she is betrothed, and he gives it. [And when he gives it, she is betrothed retroactively. For if one says: "on condition," it is as if he says: "from now."] (If he said:) "from now until thirty days" — if he gave it to her within thirty days, she is betrothed; if not, she is not betrothed. "On condition that I have two hundred zuz," she is betrothed if he has it [i.e., if there are witnesses that he has it. And if it is not known whether he has it, she is betrothed on the possibility (that he does have it), it being possible that he has it and that he desires to do her wrong.] "On condition that I show you two hundred zuz," she is betrothed, and he shows it to her. And if he showed her on the table, [If he were a money-changer, and he showed her on the table money that was not his,] she is not betrothed.