Tohoros 8:5-6

Tohoros 8:5

If the wife of an unlearned person entered a learned person’s house to get his son, daughter or animal, everything in the house remains clean since she entered without permission.

Tohoros 8:6

A general rule was stated in regards to ritually-clean food: whatever is designated for human consumption is susceptible to ritual impurity unless it is rendered unfit to be eaten by a dog; whatever is not designated for human consumption is insusceptible to ritual impurity unless it is designated for human consumption. For example, if a pigeon fell into a wine press and he intended to remove it for a non-Jew, it becomes susceptible to impurity. If he intended to give it to a dog, it remains insusceptible to impurity, though Rabbi Yochanan ben Nuri rules it is susceptible. If a person with congenital deafness, a person lacking mental competence or a minor intended it as food, it remains insusceptible to impurity but if they pick it up, then it becomes susceptible. This is because their actions are effective even though their intentions are not.