Is silent Torah study (hirhurim — thinking about Torah without speaking) forbidden during the congregation's recitation of piyyutim?

PrayerBirchot Kriat Shema

Synopsis

The Rema permits silent Torah study during piyyutim on the grounds that thought is not equivalent to speech (hirhur lo k'dibbur dami), but cautions against it because it may lead to actual speech.

Early Acharonim
Late Acharonim
Lenient
Strict
Lesser cited
Major authority

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