R’ Eliezer says: A person may donate an asham talui any day or any time that he wishes, and this is called the asham of the pious. It was said concerning Bava ben Buti that he would donate an asham talui every day, except one day after Yom Kippur. He said: By this Temple! Were they to permit me, I would bring it, but they tell me: Wait until you come into a doubt. But the Sages say: We may not bring an asham talui except for something which, if intentional, [bears a penalty of] kares and, if unintentional, [is liable to a] chatas.