The Lubavitcher Rebbe offers a number of explanations regarding why the Alter Rebbe did not include Rambam's 13 Principles of Faith in the Siddur. Join me as we explore the meaning and precision of prayer. Based on Igros Kodesh vol.12, p.18-20.

Here are some of the sources discussed: https://www.sefaria.org/sheets/241019?editor=1