an oath before GOD shall decide between the two of them that the one has not laid hands on the property of the other; the owner must acquiesce, and no restitution shall be made.

If anyone makes a vow to GOD or takes an oath imposing an obligation on themselves, they shall not break their pledge; they must carry out all that has crossed their lips.

It is better not to vow at all than to vow and not fulfill.

…If you have all these qualities you are permitted to take an oath, but if not, you are not permitted to take an oath. There was an incident involving King Yannai, who had two thousand cities, and all of them were destroyed due to true oaths. How so? A person would say to another: “By oath, I am going and eating this and that in such and such place, and drinking this and that in such and such place.” They would go and fulfill their oath, and they were destroyed. If this is so for one who swears truthfully, how much more so for one who swears falsely!