If one failed to concentrate during the Avot blessing, must one repeat the Amidah?

PrayerAmidah

Synopsis

The Mechaber rules one must repeat the Amidah if one did not concentrate during Avot, even if one concentrated during all other blessings. The Rema records that nowadays we do not go back, since one likely will not concentrate on the repetition either.

Early Acharonim
Late Acharonim
Lenient
Strict
Lesser cited
Major authority

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