Women's Issues: Women in Judaism: Women and Halacha:
Can women issue rulings on halachic questions?
There's no reason why a qualified woman can't express her opinions
on halachic matters. She can't serve as a judge in matters that
require a court, but there's no reason why she can't issue opinions
on matters involving forbidden and permitted things (issur ve-heter).
Women have sometimes been used as consultants in areas of halacha in
which they have special expertise (e.g., niddah), and eventually there
may exist women whose opinions on halacha are accepted.
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