Nedarim 7:2-3

Nedarim 7:2

If a person takes a vow prohibiting grain to himself, Rabbi Meir says he also may not have dried Egyptian beans, though the Sages say he is only prohibited from the five species of grain (wheat, rye, barley, oats and spelt). Rabbi Meir says that if one is prohibited by a vow from eating produce (“tevuah”), he is only not permitted the five species of grain, but if one is prohibited by a vow from eating grain, then all forms of grain are included, though he may eat fruits and vegetables.

Nedarim 7:3

If a person takes a vow prohibiting clothing to himself, he is allowed to cover himself with sackcloth, a curtain or a blanket. If he says “Konam if wool comes on me,” (this only includes garments and) he may cover himself with sheep shearings. If he said, “Konam if flax (i.e., linen) comes on me,” (this only refers to garments and) he may cover himself with stalks of flax. Rabbi Yehuda says that everything depends on the context of the one who took the vow. For example, if a person is carrying a load so that he is sweaty and smells bad and he says, “Konam if wool and flax come on me,” he may wear clothes of these materials since he clearly referred to carrying these things as a burden.