Shabbat 135 - Circumcision for an androgyne
Since someone who is androgynous may be predominantly a male or a female, he (or she) does require circumcision, but because he might be primarily a female, this circumcision is not performed on Shabbat. Circumcision involves making a wound, which is prohibited on Shabbat, so it is done only for a definite male, and in this case it will happen a day later.
However, Rabbi Yehudah finds an indication in the Torah that androgyne is a special case and must be circumcised on Shabbat, if it is his eighth day. What is his source? The Torah said, " Circumcise all your males ," and this extra word "all" includes the androgyne.
Art: Adriaen The Elder Verdoel - The Circumcision