1)
Why does the Torah insert the words "be'Chol Sheretz" And "asher Yitma Lo"?
1.
Sifra: "be'Chol" includes a Neveilah and "Lo". Shi'urim ? even part (the Shi'ur Tum'ah) 1 of a Meis, a Sheretz or a Neveilah.
1
See Torah Temimah, note 19.
2)
What is "O be'Adam" referring to?
1.
Rashi: It is refering to a Meis.
3)
What are the implications of "asher Yitma lo" in connection with both Sheretz and Adam?
1.
Rashi: It implies the Shi'ur Tum'ah - a k'Adashah (the size of a lentil) by a Sheretz; and a k'Zayis by Adam.
4)
What is "le'Chol Tum'aso" coming to include?
1.
Rashi: It includes someone who touches a Zav, a Zavah, a Nidah or a Yoledes,