Translation:Mishnah/Seder Nashim/Tractate Ketubot/Chapter 1/3

In a situation where an adult man sleeps with a female minor (under the age of three years and one day), a male minor (under the age of nine) sleeps with an adult women, or an accident causes a woman to lose her virginity their ketubah would be worth 200 according Rabbi Meir. But according to the Chachmim, in the case of an accident (see above) her ketubah is worth 100.