משנה אויף ירמיהו 46:15

If a man marries a woman and does not find her to be a virgin: She says, “After you betrothed me I was raped, and so your field has been washed away” And he says, “No, rather [it occurred] before I betrothed you and my acquisition was a mistaken acquisition” Rabban Gamaliel and Rabbi Eliezer say: she is believed. Rabbi Joshua says: We do not live by her mouth, rather she is in the presumption of having had intercourse before she was betrothed and having deceived him, until she brings proof for her statement.