What is done with tefillin written by a heretic (apikoros)?
Synopsis
The Mechaber rules they must be burned; a minority view says they should be interred (genizah). The majority of later authorities rule they must be burned. The Biur Halacha explains that the term 'apikoros' here means one devoted to idolatry.
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How much may one pay a gentile for tefillin, mezuzot, or Torah scrolls?
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Must one purchase tefillin only from an expert scribe (mumcheh)?
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When one purchases tefillin from a non-expert, how does one verify their validity through sampling?
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Must the four Torah passages for tefillin be written in the order they appear in the Torah, and is tefillin written out of order invalid?
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Should the arm-tefillin passages be written before the head-tefillin passages, or does it not matter?
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Must the head-tefillin's four passages each be written on a separate parchment, while the arm-tefillin's four passages are written on a single parchment?
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Must tefillin be written with black ink, and does writing even one letter in another color or in gold invalidate the tefillin?
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Must tefillin be written with the right hand, and are tefillin written with the left hand invalid?
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On which side of the klaf (parchment) must tefillin be written, and what are the requirements for the type of parchment?
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