Chapter 19 – Mashiv Haruah (prayer praising G-d as the source of rain) and Tal Umatar (Rain and Dew liturgy)
19.1) During winter include “Thou causest the wind to blow and the rain to fall” in the Shemoneh esreh (eighteen; silent prayer).
19.2) If you neglect a part of a prayer, follow the instructions from the source.
19.3) Some communities say, “Thou causest the wind to blow and the rain to fall” in the summer. The source instructs you as to what to say.
19.4) Mashiv haruah (prayer praising G-d as the source of rain) is not to be incorporated in the benediction.
19.5) Include rain and dew in the Shemoneh esreh on the sixteenth day after the cycle.
19.6) If you neglect to say Tal umatar (Rain and Dew liturgy), say “and give dew and rain for a blessing upon the face of the earth, and satisfy us,” to conclude the benediction.
19.7) Make sure you say the correct thing in the summer.
19.8) Make sure you include the appropriate phrase in the appropriate season.
19.9) If you read the weekday Shemoneh esreh on the first day of Passover, conclude the entire benediction with Tal umatar.
19.10) If you forget to say some part of the Shemoneh esreh, refer to the source for what to say.
19.11) If you forget to say the appropriate words during the morning service, repeat the Shemoneh esreh.
19.12) When you must repeat the Shemoneh esreh, wait the time it takes to walk four cubits (6 feet) to do so.
19.13 ) If the hazan (cantor of a synagogue) makes a mistake while saying the Shemoneh esreh, he does not need to repeat it.
19.14) On a public or private fast day, you must say a certain prayer.