Vayikra 15:18-20

Orthodox Jewish Bible

¹⁸ The isha also with whom ish shall lie with shikhvat zera, they shall both immerse themselves in mayim, and be tamei until the erev.

¹⁹ And if an isha have a discharge, and her discharge in her body be dahm, she shall be in her state of niddah (state of menstrual separation) seven days; and whosoever toucheth her shall be tamei until the erev.

²⁰ And everything that she lieth upon in her niddah shall be tamei; everything also that she sitteth upon shall be tamei.