What are the connotations of "Mayim Kedoshim"?
Rashi: It refers to water that the Kohen takes from the Kiyor.
What is the significance of the fact that the Kohen gives the Sotah Mayim Kedoshim to drink?
Rashi: The Kiyor was made from the copper that the righteous women who donated towards the Mishkan, 1 whereas she departed from their ways by lying with another man. Let her be examined via that Kiyor!
Why does the Kohen give the Sotah bitter water to drink out of a cheap earthenware vessel?
Rashi: Because she gave the adulterer good-quality wine to drink out of expensive cups.
Ramban: Refer to 5:15:1:3.
Where does the Kohen find earth on the floor of the Beis-Hamikdash which was covered with marble?