For the source text click/tap here: Avodah Zarah 27
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Can a woman – who does not have a circumcision – circumcise a baby?
Must the person who circumcises a Jewish child be Jewish himself?
Two passages are brought on our daf that limit the kind of people who can perform circumcision. Daru bar Pappa quotes the pasuk that permits only those like Abraham and his descendants to act as a mohel (see Bereshit 17:9), while Rabbi Yoḥanan quotes the pasuk that is understood to limit a brit milah only to people who, themselves, have been circumcised (see Bereshit 17:13).
The Gemara suggests several differences that may stem from these different sources. For example, according to the first pasuk, women may be excluded, since they cannot be circumcised. According to the second pasuk, however, since women are considered as if they have been circumcised, they would be able to circumcise others – with Moshe’s wife, Tzippora a prime example (see Shemot 4:25).