What constitutes hefsek ha-daat (distraction from awareness) requiring one to touch/check tefillin, and does sleep qualify?

Daily LifeTefillinWearing Tefillin

Synopsis

There is debate over what constitutes a forbidden lapse of awareness (hesech ha-daat) from tefillin. Levity and frivolity qualify; focused work or study does not. Sleep causes a lapse but is separately governed by sleep rules.

Early Acharonim
Late Acharonim
Lenient
Strict
Lesser cited
Major authority

Discussion

Discussion coming soon.

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