Reference for Arakhin 55:43

אמר רבי

But surely the last part [of this Mishnah] reads: RABBI SAYS: THE WORDS OF R'JUDAH ARE ACCEPTABLE IN CASES OF IMMOVABLE PROPERTY, AND THE WORDS OF R'SIMEON IN CASES OF MOVABLE PROPERTY; it follows that R'Simeon refers to immovable property too? - This is what he means: Rabbi said, The words of R'Judah are acceptable to R'Simeon in cases of immovable property, for R'Simeon disputes his view only in cases of movable property, but in cases of immovable property he consents.

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