1)
How can the Kohen be certain that the Nega did not diminish to less than the Shi'ur of two Gerisim between the time that he sees the Nega and closes the door of the house?
1.
Chulin, 19b: Indeed, we learn from here the principle of Chazakah
1
See Torah Temimah, note 137.
2)
What are the implications of "Veyatza ha'Kohen min ha'Bayis el Pesach ha'Bayis"?
1.
Nega'im, 12:6: It implies on the one hand, that as soon as he leaves the stricken house he is obligated to close the door
1
See Torah Temimah, note 138.
