Q. Can a salesman on a Judaica store sell tefillin to a woman, when from her questions it is apparent that she plans to wear those tefilin herself?

A. See above question on the prohibition for a woman to don tefillin in our days. Horav Shlomo Miller’s Shlit”a opinion is that although there may be no prohibition of lifnei iver or placing a stumbling block before the blind (Vayikra 19: 14), since tefillin could be obtained from many sources including on line. However, one should not be a mesayea lidvar avera or helper and supporter of an improper act. He therefore recommends that the salesman should explain the woman the prohibitions mentioned in the prior question and dissuade her from her erroneous intention. He should also refer her to a competent rabbinical authority.

Rabbi A. Bartfeld as revised by Horav Shlomo Miller Shlit”a.