Even though they said that her time suffices for her, she is still required to examine herself, except for a niddah, and [a woman] who is observing her days of tohar blood. And [similarly when] she engages in marital relations [she must examine herself] with examination cloths, except for one who is observing her days of tohar blood, and a virgin whose bloods are ta-hor.  And twice [each day] she must make examinations, in the morning and in the evening, and [also] when she pre-pares herself to have marital relations. Further [obligated] than they are Kohanos when they wish to eat terumah. R’ Yehudah says: Also after they have finished eating terumah.

Any hand that examines excessively is, among women, praiseworthy, but among men, let it be cut off.  A woman who is deaf, a deranged woman, a blind woman or a woman who has lost her mind, if they have mentally competent women [available to them], [those women] should prepare them and they may [then] eat terumah.  It is the practice of the daughters of Israel that they cohabit with two examination cloths [pre-pared], one for [the husband] and one for [the wife], and the pious women prepare for themselves a third [examination cloth] “to prepare the house.”

[If blood] is found on his [examination cloth], they are tamei and obligated [to bring] an offering. [If blood] is found on her [cloth] im- mediately, they are tamei and obligated [to bring] an offering. [If blood] is found on her [cloth] after a while, they are tamei because of a doubt and are exempt from [bringing] an offering.

What is “after a while”? As long as it takes for [the woman] to descend from the bed and wipe her “face.”  And af-terward, she conveys tumah [retroactively] for a period of twenty-four hours and does not convey tumah to the one who cohabited with her. R’ Akiva says: She also conveys tumah to the one who cohabited with her.  The Sages concede to R’ Akiva [in a case] where she sees a bloodstain that she conveys tumah to the one who cohabited with her.