פירוש על קידושין 41:7

To refute the above argument, we would need to find a feature common to the two known cases (selling an ancestral field, selling a house in walled city) that is not shared by the unknown (consecrating an ancestral field). And this is exactly what Mar Zutra does. The first two have an impaired power, in that they cannot be redeemed in the second year—the one who sells an ancestral field cannot redeem it during the first two years, whereas the one who sells a walled house cannot redeem it after the first year. But one who consecrates an ancestral field can redeem it during the second year. So maybe he can also borrow and redeem or redeem it in halves.