Reference for Arakhin 1:1
הַכֹּל מַעֲרִיכִין וְנֶעֱרָכִין, נוֹדְרִים וְנִדָּרִים, כֹּהֲנִים וּלְוִיִּם וְיִשְׂרְאֵלִים, נָשִׁים וַעֲבָדִים. טֻמְטוּם וְאַנְדְּרוֹגִינוֹס, נוֹדְרִים וְנִדָּרִים וּמַעֲרִיכִין, אֲבָל לֹא נֶעֱרָכִין, שֶׁאֵינוֹ נֶעֱרָךְ אֶלָּא זָכָר וַדַּאי וּנְקֵבָה וַדָּאִית. חֵרֵשׁ, שׁוֹטֶה וְקָטָן, נִדָּרִין וְנֶעֱרָכִין, אֲבָל לֹא נוֹדְרִין וְלֹא מַעֲרִיכִין, מִפְּנֵי שֶׁאֵין בָּהֶם דָּעַת. פָּחוּת מִבֶּן חֹדֶשׁ, נִדָּר אֲבָל לֹא נֶעֱרָךְ:
All are fit to evaluate [i.e., pledge one's own worth to the Temple fund], to be evaluated [by another's pledge], to vow [another's worth to the Temple fund] or to have their worth vowed: Priests, Levites, Israelites, women and slaves. People whose sex is unknown, or hermaphrodites, are fit to vow [on another's worth], to have their worth vowed, and to evaluate, but they are not fit to be evaluated, as only those who are definitely male or definitely female are evaluated. A deaf-mute, an insane person, and a minor are fit to have their worth vowed, and to be evaluated, but they are not fit to vow [on another's worth] or to evaluate, because they are not considered capable of intent. A baby less than a month old can be vowed, but not evaluated.