Does a dog’s feces carry the same ruling as its urine?

Question:
Honorable Shaykh! The questioner asks: Is it obligatory to wash a dog’s feces seven times if it falls into a container?

Answer:
Its feces are more severe than its urine, so it is obligatory to wash it seven times and rub it with earth on the eighth. A dog’s impurity is an intrinsic impurity; washing does not remove it. Even if you washed the dog with the seas, its impurity would remain. It is intrinsically impure. Intrinsic impurity is that which cannot be purified. The dog itself is intrinsically impure and cannot be purified, just as carrion is intrinsically impure.