What is the translation of "es Mekorah He'erah"?
Rashi: It is a expression of exposure, just like 'Ervah' is. 1 Some say it means that the man's Milah 'kisses' (touches) the woman's Ervah; according to others, it means that the crown penetrates.
Rashi: The 'Vav' of 'Ervah' is added to form the noun - like 'Za'avah' from 'Za' and 'Achvah' from 'Ach.
Why does the Torah mention Kares about a Nidah, seeing as she is included in the Kares that incorporates all the Arayos (18:29)?
Ramban (9), Moshav Zekenim (9): To subject her to Kares even though he did only Ha'ara'ah. 1
What are the implications of "Es Mekor Damehah"?
Rashi: It teaches us that a woman is only a Nidah if the blood flows from its source in the womb.
Why does the Torah mention Kares by a Nidah, seeing as she is included in the Kares that incorporates all the Arayos (in Vayikra 18:29)?