פירוש על קידושין 41:3

R. Aha son of Rava argues that one cannot derive the laws regarding redeeming a consecrated field from the laws governing redeeming half of a house in a walled city. The latter may not be redeemed in halves because he has less power in general—it must be redeemed within a year. But one who consecrates a field can redeem it until the Jubilee. So maybe he should be able to redeem it in halves. This is the opposite of what the baraita at the end of last week’s daf stated.