She who aborts on the eve of the eighty-first [day] — Beis Shammai exempt [her] from an offering, but Beis Hillel declare [her] liable. Said Beis Hillel to Beis Shammai: In what way does the evening preceding the eighty-first day differ from the eighty-first day [itself]? [Furthermore,] if it is the same regarding tumah, should it not be the same regarding an offering? Beis Shammai replied to them: No, if you said regarding [a woman] who aborted on the eighty-first day, it is because it came out at a time when she is fit to bring an offering; will you say [it] of one who aborts on the evening preceding the eighty-first day, for it did not come out at a time when she is fit to bring an offering? Replied Beis Hillel: But she who aborts on the eighty-first day that fell on the Sabbath will prove [our point], for it did not come out at a time when she is fit to bring an offering, yet she is liable to an offering. Replied Beis Shammai: No, if you said of one who aborted on the eighty-first day that fell on the Sabbath, for even though it is unfit for a personal offering, it is fit for a communal offering; will you say of one who aborted on the evening of the eighty-first day, since the night is fit neither for a personal offering nor for a communal offering? [Moreover,] the [law of] the blood is not conclusive since [if a woman] aborts within the melos period, her blood is ritually contaminated, yet she is exempt from an offering.