Keilim 14:6-7

Keilim 14:6

If the metal cover of a hamper was made into a mirror, Rabbi Yehuda rules that it is insusceptible to impurity while the Sages rule it susceptible. If a broken mirror doesn’t reflect the greater part of one’s face, is insusceptible to impurity.

Keilim 14:7

Rabbi Eliezer says that metal utensils are susceptible to impurity and are purified by being broken; Rabbi Yehoshua says they can only be purified when whole. If they were sprinkled (with the purification water) and broke on the same day, so he recast them and sprinkled on them on the same day, they are clean; this is the opinion of Rabbi Eliezer. Rabbi Yehoshua says there’s no sprinkling earlier than the third and seventh days.