Numbers 5:21

5:21 Then the priest will put the woman under the oath of the curse and will say to the her, “The Lord make you an attested curse among your people, if the Lord makes your thigh fall away and your abdomen swell;

Numbers 6:21

6:21 “This is the law of the Nazirite who vows to the Lord his offering according to his separation, as well as whatever else he can provide. Thus he must fulfill his vow that he makes, according to the law of his separation.”