ה שְׁכִיב מְרַע שֶׁרוֹצֶה לְגָרֵשׁ עַל תְּנַאי אִם יָמוּת, כְּדֵי שֶׁלֹּא תִּפֹּל לִפְנֵי יָבָם, וְאִם עָמַד לֹא תִּהְיֶה מְגֹרֶשֶׁת, אוֹמֵר לָהּ כְּשֶׁנּוֹתֵן לָהּ הַגֵּט: אִם לֹא מַתִּי לֹא יִהְיֶה גֵּט וְאִם מַתִּי יְהֵא גֵּט מֵעַכְשָׁו וְאִם לֹא מַתִּי לֹא יְהֵא גֵּט, כְּדֵי שֶׁיְּהֵא הַתְּנַאי כָּפוּל וְהֵן קוֹדֵם לְלָאו, וְלֹא יִפְתַּח פִּיו תְּחִלָּה לְפֻרְעָנוּת, וְאָז יִהְיֶה בָּטֵל מִיָּד כְּשֶׁיַּעֲמֹד, אַף עַל פִּי שֶׁלֹּא יֹאמַר: חוֹזְרַנִי בִּי. וְאִם יִרְצֶה שֶׁלֹּא יִתְבַּטֵּל מִיָּד כְּשֶׁיַּעֲמֹד, אֶלָּא עַד זְמַן פְּלוֹנִי, יֹאמַר: אִם לֹא מַתִּי עַד זְמַן פְּלוֹנִי לֹא יִהְיֶה גֵּט וְאִם מַתִּי עַד זְמַן פְּלוֹנִי יְהֵא גֵּט מֵעַכְשָׁו וְאִם לֹא מַתִּי עַד זְמַן פְּלוֹנִי לֹא יְהֵא גֵּט. הַגָּה: וְיֹאמַר לָשׁוֹן זֶה דַּוְקָא: אִם מַתִּי אִם לֹא מַתִּי וְכוּ', וְלֹא יֹאמַר: אִם אָמוּת אִם לֹא אָמוּת, מֵאַחַר שֶׁהוּא לְשׁוֹן חֲכָמִים. וְעַיֵּן לְעֵיל סִימָן קנ"ד סָעִיף ק' לֹא מַשְׁמָע כָּךְ:
5 A sick man who wants to divorce conditionally in case he dies, so that [his wife] won't fall before a *yavam* [levirate marriage partner], but if he would recover, she won't be divorced, says to her as he gives her the *get* [bill of divorce]: "If I have not died, this shall not be a *get*, and if I have died, this shall be a *get* from now, and if I have not died, this shall not be a get," so that the condition is two-fold, with the positive statement preceding the negative, but not opening his mouth first with troubles. Then, it will be nullified immediately when he recovers, even though he doesn't say "return to me." And if he doesn't want it to be nullified immediately when he recovers, but after X period of time, he should say: "If I have not died by X time, this should not be a *get*, and if I have died by X time, it should be a *get* from now, and if I have not died by X time, it should not be a *get*. Rema: And he should say specifically this formula: "If I have died... if I haven't died... etc.," and he should not say "If I die... if I don't die...," since [the former] is the language of the sages. But see above Siman 154, Sa'if 100, which does not imply thus.