- On a day that you call up 3 alios, read no less than 10 p’sukim except for the 9-possuk Parshas Amalek on Purim. (ShA1)
- A minhag has spread to read the first aliya section of the upcoming Parsha on Shabbos Mincha, Mondays, and Thursdays as printed in the siddurim. This practice is not m’akayv. (MB4)
- In the following 2 cases (only) you will have to go back and read skipped p’sukim (or even 1 word):
- The weekly Shabbos morning portion
- When a second sefer Torah is read for the obligation of the day and the skipped piece was crucial to the topic of the day. (ShA3 – MB8,11)
- In the above cases, make a new aliya from the beginning of the skipped possuk plus an additional two p’sukim. The oleh should say the berachos before and after. (MB8,9)
- Make a new aliya even if the tzibbur already daavened Mussaf before realizing their mistake. (ShA3)
- If the mistake was caught before Maftir, do not make a new aliya. Instead, have the Maftir begin his repetition from the skipped possuk until the end of the parsha. (MB10)
- L’chatchila, do not repeat p’sukim already read by earlier olim even if you plan on adding 3 new p’sukim. An exception: the paray hachag from Chol HaMoed Sukkos. (ShA6 – MB19,25)