Niddah 10:7-8
Niddah 10:7
(Continuing from the previous mishna,) Beis Shammai agree with Beis Hillel that the woman in the time of pure blood may eat second tithe, she can separate a dough offering, bring it close and designate it. If her saliva or pure blood fell onto a trumah loaf, it remains clean. Beis Shammai say that she must immerse at the end of her pure blood time (before eating trumah) but Beis Hillel say that this is unnecessary.
Niddah 10:8
Let’s say that a woman sees blood on the eleventh day (of her zivah time), immerses at night and is intimate with her husband (prematurely). Beis Shammai say that the couple conveys impurity to beds and to seats, and they must bring an offering; Beis Hillel say they need not bring an offering. If the woman immersed the next day and they were intimate, after which they saw blood, Beis Shammai says they convey impurity to beds and to seats but they need not bring an offering, while Beis Hillel criticize the man as gluttonous (i.e., there’s no impurity but they should practice more self-control). Both schools agree that if a woman sees blood during the eleven days, immerses at night and is intimate with her husband, then the couple conveys impurity to beds and to seats, and they must bring an offering. If the woman immersed the next day and they were intimate, it’s misbehavior. Since she might still see blood, the things they touch and their marital act are held in abeyance (i.e., to see if things are rendered unclean and if the couple must bring an offering).