Kiddushin 64A

נאמן לנדרים, ולחרמים, ולהקדשות ולערכים, אבל לא למכות ולעונשין.

the father is deemed credible concerning the ages of his children with regard to vows, i.e., any vow they make is valid; and with regard to dedications, i.e., if they consecrate an item by saying it should be dedicated to God; and with regard to consecrations and with regard to valuations, i.e., vows to donate to the Temple treasury the fixed valuation of oneself or others. In all these cases their vows are valid. But the father is not deemed credible with regard to lashes of the court, or with regard to other corporal punishments for transgressions they have committed, as the testimony of one witness, especially that of a family member, is insufficient for this purpose.

מתני׳ ״קדשתי את בתי״, ״קדשתיה וגרשתיה כשהיא קטנה״, והרי היא קטנה ⁠– נאמן. ״קדשתיה וגרשתיה כשהיא קטנה״, והרי היא גדולה ⁠– אינו נאמן. נשבית ופדיתיה, בין שהיא קטנה בין שהיא גדולה ⁠– אינו נאמן.

Mishnah: If a father says: I betrothed my minor daughter to someone, or: I betrothed her to someone and accepted her divorce when she was a minor girl, and she is still a minor girl at the time of this statement, he is deemed credible to render her forbidden to all other men as a married woman, or to a priest as a divorced woman. But if he says: I betrothed her to someone and accepted her divorce when she was a minor, and she is an adult woman at the time of his declaration, his statement is not deemed credible. Likewise, if he says: She was taken captive and I redeemed her, he is not deemed credible to disqualify her from marrying a priest whether she was a minor girl or an adult woman.