Reference for Shekalim 1:1
בְּאֶחָד בַּאֲדָר מַשְׁמִיעִין עַל הַשְּׁקָלִים וְעַל הַכִּלְאַיִם. בַּחֲמִשָּׁה עָשָׂר בּוֹ קוֹרִין אֶת הַמְּגִלָּה בַּכְּרַכִּין, וּמְתַקְּנִין אֶת הַדְּרָכִים וְאֶת הָרְחוֹבוֹת וְאֶת מִקְוְאוֹת הַמַּיִם, וְעוֹשִׂין כָּל צָרְכֵי הָרַבִּים, וּמְצַיְּנִין אֶת הַקְּבָרוֹת, וְיוֹצְאִין אַף עַל הַכִּלְאָיִם:
On the first of Adar, proclamations are made for shekalim (the head-tax for the Temple). [Beth-din send throughout the cities of Israel and proclaim that they must bring their shekalim. For on the first of Nissan communal offerings must be brought from the new levy, viz. (Numbers 28:14): "This is the burnt-offering of the month in its month for the months of the year" — Renew the bringing of offerings from the new (half-shekel) levy (the root of "month" and "new" being the same in Hebrew). And "the months of the year" here (as referring to Nissan) is derived from (Exodus 12:2): "It (Nissan) is first for you of the months of the year." Therefore, the proclamation for the bringing of shekalim is advanced thirty days to the first of Adar.] and (proclamations are made) for kilayim (interdicted mixed sowing) [i.e., They proclaim that the other variety must be diminished until there not remain of it a rova of a kav to a sa'ah, as stated (Kilayim 2:1): Every sa'ah which contains a rova of a kav of a different variety must be diminished. Our rabbis explained that after the seeds are already grown even one in a thousand must be uprooted. For any two varieties, each of which by itself is permitted, but which are interdicted in admixture, do not lend themselves to bitul ("canceling out"). It is only when they are intermixed in sowing that diminution suffices, bitul obtaining with one in two by Torah law, so that it is not called a sowing of kilayim, and (the prescribed) diminution is required only because of "appearances" (marith ayin). But after they have grown, bitul does not obtain and everything must be uprooted so that only one of the varieties remains.] On the fifteenth (of Adar) the Megillah is read in the towns [surrounded by a wall from the days of Yehoshua the son of Nun. Because of the teaching (1:3): "On the fifteenth of Adar money-changers sat in the province," everything else that they did on that day was included.], and repairs are made on roads, streets [and marketplaces that were damaged by rains in the wintertime. They are repaired for the festival pilgrims. Some explain (that they are repaired) for the benefit of those who slew unwittingly, so that they can flee the blood avenger, as it is written (Deuteronomy 19:3): "Prepare the way for yourself."], and (repairs are made on) ritual baths. [If sediment accumulated in them, they are cleaned, and if the mikveh fell below the required amount, they would add drawn water to it and bring it up to that amount (the majority of the required forty sa'ah being kasher)], and all community needs are attended to [such as monetary litigations, capital cases, cases of stripes, the redemption of assessments, devotions, and dedications, the administration of the sotah's draught, the burning of the red heifer, the boring of (the ear of) the Hebrew bondsman, and the cleansing of the leper. And they would send (messengers) to open cisterns of stored water, so that the people could drink from them in the summertime, all these being community needs.] And graves are marked [so that Cohanim and bearers of taharoth (consecrated foods) not "tent" over them. They "marked" by crumbling lime and spilling it around the grave. In the rainy season the lime would dissolve so that it was necessary to repeat the process.] And they [deputies of beth-din] would also go out for (i.e., to root out) kilayim. [Even though they had already made proclamation in this regard on the first of Adar (see above), they did not rely upon it, fearing that the owners might not have uprooted it, and they went out and did so themselves.]