The pesach-offering contaminates one's hands after midnight. Piggul and “leftover” [sacrificial meat] contaminate the hands.  [If] he recited the blessing for the pesach-offering, he exempts [the blessing] of the [chagigah-] offering; [but if] he recited that of the [chagigah-] offering, he does not exempt that of the pesach-offering —- these are the words of R' Yishmael.  R' Akiva says: This one does not exempt that one, nor does that one exempt this one.

On the first of Adar they proclaim about [the payment of] the shekalim and about kilayim.  On the fifteenth of Adar they read the Megillah in the walled cities, they [commence] to repair the roads, the town squares, and the accumulations of wa-ter, they attend to all of the public needs, they mark the graves, and they also go out [to inspect the fields] for kilayim.