Halakhah for Nazir 6:11

The laws of the commandment - for example, appellations for oaths, [about] which they, may their memory be blessed, said that they are like an oath [and the explanation of appellations for oaths are the many terms that exist among people, according to their places, like what they, may their memory be blessed, said (Nedarim 10a), "Shevuta, shekuka, etc."]; so [too], the law [if one says,] "a curse (allah)" or "cursed (aroor)" whether they are like oaths (Shevout 36a); one who says "no" with the mention of God, and so [too], "right or left (Nazir 3b); the law of his mouth and heart being [in agreement], and that which we learned from this law of his mouth and heart being [in agreement], that we are able to make [deceptive] oaths to killers and plunderers, like [if] he say that all the fruits in the world are forbidden to him if there be such and such, and in his heart is that they only be forbidden for today (Nedarim 27b), and even though it generally implies forever, but it is only permitted to us like this, when the words of his mouth do not completely contradict the thought of his heart, and not in any other way; and the rest of its many details - are [all] in Shevuot and Nedarim (See Tur, Yoreh Deah 236).