1. Why a Baal Keri immerses in a mikveh
A Braisa teaches that the reason a baal keri is the only type of tumah that requires immersion in
a mikveh before one is able to learn Torah is because the tumah came about as a result of levity.
This is inconsistent with how the Torah was received at Har Sinai, which was with fear and
trepidation.
2. Words of Torah don’t contract tumah
R’ Yehuda ben Beseira does not require a baal keri to immerse before learning Torah, because
he holds that words of Torah are like fire, which do not contract tumah. He learns this from the
pasuk: ‘ה נאם כאש דברי כה הלא ,Behold my words are like fire, says Hashem.
3. 40 Se’ah or 9 Kabin?
There is a machlokes whether a baal keri requires immersion in a mikveh of forty se’ah or
whether having nine kabin of water poured over him suffices.
Siman - Cab
A cab driver laughed as his cab was surrounded by fire, which he doused with forty se’ah of water,
pouring from a nine-kabin pail.