Chapter 20: 4-6
The Chazon's Repetition
4.During the recitation of Kedushoh, everyone should position his feet
together so they appear as one foot (as it is written: "After their feet
were like a straight foot." [See Chapter 18, Law 5.]) When reciting the
verse Kodosh, kodosh, kososh and the verses Boruch k'vod..., Yimloch...,
one should lift [oneself up on the toes, raising] one's body and heels. It
is customary to raise one'e eyes upward. It is desirable that one's eyes be
shut.
5.When the chazon reaches the blessing Modim, the entire congregation bows
and recites the Modim prayer instituted by the Rabbis. It is customary to
recite this entire prayer while bowed.*
* {There are other customs which require one to rise after reciting G-d's
name. (See Shulchon Oruch HoRav 127:1, Mishnoh Beruroh 127:5.)}
[The following rules apply when] a person hears the chazon recite Modim
while he is reciting the Shemoneh Esreh in a hushed tone: If he is in the
midst of a blessing, he should also bow. If, however, he is at the
beginning or the end of a blessing, he should not bow, because it is
forbidden to bow at the beginning or the end of a blessing except in those
places where bowing was ordained by our Sages.
6.Before reciting the blessing Sim Sholom, the chazon adds the prayer
Elo-heinu V'Elo-hei avosainu [in which the priestly blessings are recited].
When he recites v'yishm'recho [in conclusion of the first blessing], the
congregation should response Ken y'hi rotzon ("So may it be willed"), and
not 'Amen.' This also [applies when concluding the second and third
blessings with the words] vichuneko and Sholom.*
* {In Eretz Yisroel, it is customary for the Kohen to recite the priestly
blessings each day, as will be explained in Chapter 100.}
This prayer is added only in the morning and musaf services, but not in the
afternoon service. Nevertheless, on a fast day, when the blessing Sim
Sholom is also recited during the afternoon service, the chazon also
recites Eol-heinu v'Elo-hei avosainu,. This prayer is not recited in the
house of a mourner or in the morning service on Tisha B'av.