Reference for Ketubot 146:13

איתיביה הריני בועליך על מנת שירצה אבא אע"פ שלא רצה האב מקודשת ר' שמעון בן יהודה אומר משום ר"ש רצה האב מקודשת לא רצה האב אינה מקודשת והא הכא דכי טעות אשה אחת דמי ופליגי

He raised [another] objection against him: [If a man said to a woman,] “I am having intercourse with you on the condition that my father will consent,” she is betrothed to him even if his father did not consent. R. Shimon b. Judah stated in the name of R. Shimon: If his father consented she is betrothed but if his father did not consent she is not betrothed. Now here it is a case similar to that of an error involving one woman and they nevertheless disagree!

Jastrow