Commentary for Leviticus 11:38

‎זרע‎‎ ‎על‎‎ מים‎ וכי יתן BUT IF ANY WATER BE PUT ON THE SEED, after it has been plucked, … it shall be unclean; for if you assert that there can be fitness to receive uncleanness whilst it is still attached to the soil, you will never have any seed which has not become thus fitted (Chullin 118b; cf. Sifra, Shemini, Section 8 2 and Rashi on v. 34).

Or other liquids. For we derive a gezeirah shavah from מים מים, from the word מים above (v. 34) regarding earthenware vessels, where other liquids are regarded the same as water.

ונפל מנבלתם, “and part of their carcass fell upon them;” not if it fell on bones free from flesh. Teeth and horns and hair are also not included in the definition “carcass.”