Reference for Niddah 43:10

הרואה קרי בקיסם מהו

the blood is unclean since it comes through the uterus,<span class="x" onmousemove="('comment',' Cf. prev. n. The blood consequently conveys uncleanness to any object with which it comes in contact and also to the woman herself to the extent that her uncleanness lasts until sunset. ');">¹⁰</span>

Jastrow

Jastrow

Jastrow