Hot answers tagged minyan
There would seem to be a chazakah that someone who enters a shul to daven is Jewish, especially if you see them davening. This is no worse than the chazakah that someone who comes to Yerushalayim to eat the korban Pesach is assumed to be Jewish (until proven otherwise as in the case of Bava ben Buta). If they are not Jewish, at worst you have been over an ...
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