New answers tagged nuschaot
I have just compared the weekday ma'ariv services in the following two books: Siddur Sim Shalom for Weekdays, September 2003 (2nd printing) Expanded Artscroll Siddur, Wasserman Edition, 2010 I found the following differences: Sim Shalom has two versions of the beginning of the t'filah, the usual text (page 142a) and the same text with the imahot ...
I grew up in a Conservative shul and we used the old version of Siddur Sim Shalom (which didn't include the imahot). The only difference in the weekday ma'ariv davening is that the רצה bracha does not include the words ואשי ישראל. Someone who knows that one difference could easily daven with that siddur and make that change on his own.
The text in Siddur Sim Shalom is clearly different by the Amidah, where it includes the names of the Imahos. Perhaps there are other differences too. Per Igros Moshe Orach Chaim 4:91 conservative doctrine is against the Torah.
Satmar in Montreal (R' Zalman Leib's) use Siddur Yetev Lev which indeed has a strange format, as mentioned by Shmuly.
The Rebbe Reb Yoilish ztz"l himself used to daven from the Siddur Tefillo Yeshoro we-Kesser Nehoiro.
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