One who had two infants, one to circumcise after the Sabbath and one to circumcise on the Sabbath, and he forgot and circumcised the one who was [to be circumcised] after the Sabbath on the Sabbath, he is liable; [if he had] one to circumcise before the Sabbath and one to circumcise on the Sabbath, and he forgot and circumcised the one who was [to be circumcised] before the Sabbath on the Sabbath, R’ Eliezer declares [him] liable for a sin offering. But R’ Yehoshua exempts [him].

An infant may be circumcised [either] on the eight, ninth, tenth, eleventh, or twelfth [day], not earlier not later. How is this? In the normal course, [he is circumcised] on the eight; if he was born at twilight, he is circumcised on the ninth; [if he was born] at twilight on the eve of the Sabbath, he is circumcised on the tenth; [if] a festival [falls] after the Sabbath, he is circumcised on the eleventh; [in the case of] the two festival days of Rosh Hashanah, he is circumcised on the twelfth. A sick infant, we may not circumcise him until he recovers.

These are the shreds that invalidate the circumcision: flesh that covers the larger part of the corona. And he may not eat of terumah. If he was fleshy, he must rectify it for appearances’ sake. If he circumcised but did not expose the circumcision, it is as if he did not circumcise.

R’ Eliezer says: We may suspend a strainer on Yom Tov, and we may pour into a suspended one on the Sabbath. But the Sages say: We may not suspend a strainer on Yom Tov, nor may we pour into a suspended one on the Sabbath, but we may pour into a suspended one on Yom Tov.