Shevuos 3:4 - 3:5

ואכל נבלות חייב – that they are appropriate for eating, for if not, for the All-Merciful forbad them.

ר"ש פור – that was subjected to an oath and he stands over them, and the dispute between Rabbi Shimon and the first Tanna/teacher [concerns] including things that are permitted with things that are forbidden, as for example when one states an oath “that I will not eat slaughtered and meat of animals torn, the First Teacher holds that since the oath takes effect with that which is slaughtered, it also takes effect on that of torn animals, for the prohibition can take legal hold where another prohibition already exists regarding a more comprehensive prohibition (i.e., having a wider range of prohibited objects), but Rabbi Shimon holds that one prohibition can take no legal hold where another prohibition already exists (i.e., you can punish, or impose sacrificial expiation only for the first one) But the Halakha is not according to Rabbi Shimon.

אשתו אסורה – for he ate food, and even according to Rabbi Shimon. For the reason that he is exempt in the first [oath] is not because they are not things eaten, but rather, that the oath doesn’t take effect on something that is forbidden.

ואחד דברם של אחרים – as he explains that I will give [something] to so-and-so.

שאין בהן ממש – it implies two ways, as, for example, he changed and implies that he changed it and it implies that there is no benefit in them, as for example, “that I will throw a stone into the sea.”

מרבוי הכתוב (from an extension supplied by Scripture) – (Leviticus 5:4): “whatever a man may utter in an oath [- and, though he has known it, the fact has escaped him].” But there is a dispute between Rabbi Akiva and Rabbi Yishmael, for Rabbi Akiva expounds throughout the Torah extensions [of the scope of Biblical texts] and limitations of Biblical texts, but Rabbi Yishmael expounds general rules/principles and specifications; Rabbi Akiva expounds (Leviticus 5:4): “Or when a person utters an oath” is an extension, “to a bad or good purpose” is a limitation. What is an extension. What is an extension of scope? An extension are all words of what he did in the past like what will take place in the future; and what is a limitation? He limits the matter of a commandment. But Rabbi Yishmael expounds (Leviticus 5:4): “Or when a man utters an oath,” is a generalization; “to a bad or good purpose” (Leviticus 5:4) is a specification; “whatever a man may utter by an oath” (Leviticus 5:4), he once again states a generalization: “a generalization and a specification and [followed by] a generalization, one is guided by what the specification implies; just as the specification is interpreted for what happens in the future, so also everything regarding what will happen in the future. But the Halakha is according to Rabbi Akiva.