Mishnayos Yevamos Perek 14 Mishnah 8

If two halakhically competent brothers were married to two unrelated women, one of whom is halakhically competent and the other one a deaf-mute, and the halakhically competent brother married to the deaf-mute woman died, what should the halakhically competent brother married to the halakhically competent woman do? The brother cannot perform ḥalitza with her, as she is a deaf-mute. Rather, he marries the deaf-mute, and if he wishes to divorce her, he may subsequently divorce her with a bill of divorce. If the halakhically competent brother married to the halakhically competent sister died, what should the halakhically competent brother married to the deaf-mute do? Either he performs ḥalitza or he enters into levirate marriage.

שְׁנֵי אַחִים פִּקְחִים נְשׂוּאִים לִשְׁתֵּי נָכְרִיּוֹת, אַחַת פִּקַּחַת וְאַחַת חֵרֶשֶׁת, מֵת פִּקֵּחַ בַּעַל חֵרֶשֶׁת, מַה יַּעֲשֶׂה פִקֵּחַ בַּעַל פִּקַּחַת, כּוֹנֵס. וְאִם רָצָה לְהוֹצִיא, יוֹצִיא. מֵת פִּקֵּחַ בַּעַל הַפִּקַּחַת, מַה יַּעֲשֶׂה פִקֵּחַ בַּעַל חֵרֶשֶׁת, אוֹ חוֹלֵץ אוֹ מְיַבֵּם.