פירוש על קידושין 108:14

A person is buying second tithe produce. He draws it into his possession but before he can redeem it the produce is worth two selas. He pays the seller only a sela since he acquired it before it went up in price. The full second tithe produce is now his and he has gained a sela. The problem is that if second tithe is holy, as R. Meir says, then one acquires it only after paying the money, not by drawing it into his possession, like non-sacred items. This seems to be another anonymous mishnah that follows R. Yehudah.