Nu, so should we get back to the real stuff? In a previous post I mentioned the halacha of not reading viduy bikurim if you are bringing fruit from a tree which has been chopped down; you cannot refer to “adamah asher nasatah li” if you don’t have the tree any longer. The R"Sh learns this Mishna as referring to a case where the tree was chopped down before you harvested the fruit. However, if the tree was standing when you plucked the fruit and then it was chopped down, not only can you not read the parsha, but you can’t bring the bikurim either. His rule: if the fruit was originally unfit to have the parsha read, the reading is not m’akeiv, but if it was fit to have the parsha read and became nidche, the reading is m’akeiv. The Rambam quotes the Mishna k’peshuto, indicating that in either case the fruit can be brought. Apparently, the Rambam does not hold of this chiddush of ra’uy v’nidche disqualifying the fruit.
The issue comes up in other places l’shitasam. If someone sold land the fruit grew on, the Mishna says that the seller cannot read the parsha of bikurim because he cannot refer to “adamah asher nasatah li”. R”Sh learns that the sale had to have taken place before the fruit was harvested from the tree, otherwise the fruit was ra’uy v’nidche and would be disqualified. The Rambam (Bikurim 4:5) again quotes the Mishna as-is, rejecting the qualification of the R”Sh.