Must the scribe verbally declare intent (lishmah) before writing tefillin and before writing each Divine Name?

Synopsis

The Mechaber requires verbal declaration at the start of writing and before each Divine Name. The Rema cites a view that mental intent suffices after the initial verbal declaration. All agree one should not write when drowsy.

Early Acharonim
Lenient
Strict
Lesser cited
Major authority

Discussion

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