Question (R. Yosi ben Chaninah to R. Yochanan): When the owner protests, must it be done in front of Beis Din?

R, Yosa citing R. Yochanan: No.

Alternative version (R, Yosi ben Chaninah to the students of R. Yochanan): Does protesting need Beis Din?

Answer (R. Chiyah citing R. Yochanan): Yes.

Shmuel: Even if he protested in front of his laborers, it is valid.

Question: If the person had been inhabiting his land for a number of years, must the owner protest for each three years? (Note: The Gemara will soon answer this.)