Shacharis
Say the Shemoneh Esrei for Shalosh Regalim, inserting the additions for Shavuos where indicated. This is followed by the complete Hallel, Kaddish Shalem, Shir Shel Yom, and krias hatorah.
Krias Hatorah
The Rebbe strongly encouraged bringing all children to shul on Shavuos, at least for the Aseres Hadibros. If possible (and their health permits it), infants should be brought from the age of a month and above. If so desired, infants who are even younger can be brought as well.
When the aron kodesh is opened, say Vayehi Binsoa Ha’aron, the Yud-Gimel Midos Harachamim (once), the Ribono Shel Olam for Shalosh Regalim (inserting, where indicated, your name, your mother’s name, and the words תּ יב ,ּ ת י, בנּ י, בנ יאּ ש, and/or תַ יב נו, whichever appropriate), and Berich Shemei.
Two Sifrei Torah are removed from the aron kodesh. From the first Sefer Torah, five aliyos are read in the kriah of Bachodesh hashlishi (Shemos 19:1–20:23). We do not say Akdamos.
When the Aseres Hadibros are read, stand facing the Sefer Torah. The Aseres Hadibros are read with the tune known as ta’am elyon.
The second Sefer Torah is then placed next to the first one, and Chatzi Kaddish is recited. This is followed by hagbah and gelilah of the first Sefer Torah. From the second Sefer Torah, Uveyom habikurim (Bamidbar 28:26–31) is read for Maftir. This is followed by hagbah and gelilah of the second Sefer Torah, after which the haftorah is read (Yechezkel 1:1–28, 3:12).
If reading the haftorah along with the ba’al hamaftir, some are accustomed to stand, out of respect for the haftorah’s content (which describes the merkavah).
Today is the anniversary of the histalkus of the Baal Shem Tov in 5520 (1760). His resting place is in Mezhibuzh.
