(Mishnah): There were two judges of theft in Yerushalayim, Admon and Chanan ben Avishalom. Chanan said two laws. Admon said seven.

If a man went overseas and his wife demands food, Chanan says that she swears when she collects the Kesuvah in the end, but not at the beginning;

The sons of Kohanim Gedolim argued with him, and said that she swears at the beginning and the end;

R. Dosa ben Archinas said like them (Bnei Kohanim Gedolim);

R. Yochanan ben Zakai says, Chanan said properly. She swears only at the end.

(Gemara) Question: Didn't R. Pinchas say in the name of R. Hoshayah that there were 480 Batei Din in Yerushalayim, and each had a Beis Sefer and a Beis Talmud - Beis Sefer for Mikra, and a Beis Talmud for Mishnah - and [only] these two were appointed over theft?!

Answer: (Only these two were able to fine not according to Torah law.) This teaches you that anyone who has ability to protest and does not protest, the ruin is attributed to him.

(Beraisa - in the name of R. Nasan): Also Nachum ha'Midi was with them (judged thefts in Yerushalayim).

According to R. Nasan, there were three judges of thefts in Yerushalayim.