156 Megillah 3/3-6

(3) Rabbi Yehudah teaches also, that no funeral orations may be delivered in a synagogue which had become ruinous, nor may it be used as a rope-walk, nor to spread nets therein [to dry], nor to spread fruit on its roof, nor to use it as a short cut, as it is said (Lev. 26:31), "I will bring your sanctuaries into desolation," that is, they remain sanctuaries even in their desolation. If grass spring up therein, it may not be pulled up, that the view may contribute to the affliction [of the beholder].

(4) When the new moon of Adar happens on a Sabbath, the section Shekalim (Exod. 30:11), is to be read; if it happen on any other day, that section must he read on the preceding Sabbath, and nothing additional is read on the following Sabbath. On the second, the section ‏of Zachor (Deut. 15:14), is to be read; on the third, that of the red heifer, ‏ Parah (Num. 19); on the fourth, that of ‏Hachodesh (Exod. 17); on the fifth, they return again to the regular order. The regular order [of parashot] is also interrupted on Rosh Chodesh, on Chanukah, on Purim, on fasts, and on Yom Kippur.

(5) On [the first day of] Passover, the section in Leviticus relative to the festival must be read; on the feast of weeks, that commencing, "Seven weeks shall you count," (Deut. 16); on the feast of new year, the section commencing, "In the seventh month, on the first day of the month" (Num. 29:1); on the day of atonement, that of ‏ Acharei (Lev. 16); on the first day of the feast of tabernacles, the section in Leviticus relative to the festivals must be read; and on the other days of that festival, the offerings for each day (Num. 29:17).

(6) On Hanukkah, the section of the offerings of the princes (Num. 7) must be read; on Purim, that of ‏Vayavoh Amalek, "Amalek arose," (Exod. 9:8); on Rosh Chodesh, ‏ Uverashei Chodshaichem, "And the firsts of the months,"‎ (Num. 18:11); on the fast-days for the standing men, Ma'aseh V'reishit, "In the beginning" (Gen. 1); on fast-days, B'rachot uk'lalim, "Blessings and curses." (Lev. 26:3). The curses must be read without interruption, namely, one person must read the whole [chapter]. On Mondays and Thursdays, and on the Sabbath afternoon, they shall read the section of the law in its regular order, but these readings are not available to reduce the regular number: for it is said, Lev.23:44, "Moses declared unto the children of Israel the appointed festivals of the Lord," whence it is inferred, that each section must be read on the appointed festival to which it refers.