Parah 10:3-4

Parah 10:3

If a jar of sanctification water touches vermin, it remains ritually clean; if the jar was put on the vermin, Rabbi Eliezer says that it remains clean but the Sages say that it’s rendered unclean. If the jar touches foods, liquid or holy books, it remains clean; if it was put on top of them, Rabbi Yosi says that it remains clean but the Sages say that it’s rendered unclean.

Parah 10:4

If a person who was clean for the sanctification water touched an oven with his hand, he is rendered unclean; if with his foot, he remains clean. If he stood on an oven and stuck his hand beyond the oven with flasks in his hand – and also if a pole was placed over the oven with a jar hanging at either end – Rabbi Akiva says they remain clean but the Sages say they’re rendered unclean.