וְכָל־בֶּ֣גֶד וְכָל־ע֔וֹר אֲשֶׁר־יִהְיֶ֥ה עָלָ֖יו שִׁכְבַת־זָ֑רַע וְכֻבַּ֥ס בַּמַּ֖יִם וְטָמֵ֥א עַד־הָעָֽרֶב׃ (פ)
Setiap pakaian dan setiap barang dari kulit yang terkena air mani harus dicuci dengan air, dan tetap najis sampai petang.
Mishnah Shabbat
How do we know that if one [a woman] discharges semen on the third day she is unclean? Because it is said, “Be ready for the third day” (Exodus 19:15). How do we know that one who has been circumcised may be bathed on the third day [after circumcision] which falls on Shabbat? Because it is said, “And it came to pass on the third day, when they were in pain” (Genesis 34:25). How do we know that a crimson-colored strap is tied to the head of the goat that is sent [to Azazel]? Because it is said, “If your sins be as scarlet, they shall be as white as snow” (Isaiah 1:18).