Lev 15:23 | KD | STEP | The menses of a woman . - “If a woman have an issue, (if) blood is her issue in her flesh, she shall be seven days in her uncleanness.” As the discharge does not last as a rule more than four or five days, the period of seven days was fixed on account of the significance of the number seven. In this condition she rendered every one who touched her unclean ( ), everything upon which she lay or sat ( ), every one who touched her bed or whatever she sat upon ( , ), also any one who touched the blood upon her bed or seat ( , where הוּא and בּו are to be referred to דּם); and they remained unclean till the evening, when they had to wash their clothes and bathe themselves.

‏ Leviticus 15:23

Lev 15:19-23 The menses of a woman. - “If a woman have an issue, (if) blood is her issue in her flesh, she shall be seven days in her uncleanness.” As the discharge does not last as a rule more than four or five days, the period of seven days was fixed on account of the significance of the number seven. In this condition she rendered every one who touched her unclean (Lev 15:19), everything upon which she lay or sat (Lev 15:20), every one who touched her bed or whatever she sat upon (Lev 15:21, Lev 15:22), also any one who touched the blood upon her bed or seat (Lev 15:23, where הוּא and בּו are to be referred to דּם); and they remained unclean till the evening, when they had to wash their clothes and bathe themselves.