Nedarim

Samuel said on Levi's authority: All vows the husband can annul to his wife, except 'my benefit [be forbidden] to so and so,' which he cannot annul.  But he can annul [the vow], 'the benefit of so and so [be forbidden] to me.' We learnt: '[KONAM] BE THE FRUIT OF THIS COUNTRY TO ME,' HE CAN BRING HER THAT OF A DIFFERENT COUNTRY?  — Said R. Joseph: It means that she vowed, '[KONAM BE THE FRUIT OF THIS COUNTRY TO ME] which you may bring'.  Come and hear: 'KONAM BE THE FRUIT OF THIS SHOP-KEEPER TO ME,' HE CANNOT ANNUL? — Here too it means that she said, 'which you may bring.' [But does it not state:] BUT IF HE CAN OBTAIN SUSTENANCE ONLY FROM THIS SHOP-KEEPER, HE CAN ANNUL. Now if you maintain that she vowed, 'which you may bring,' why can he annul it?  Hence, since the second clause must mean [even] those not brought by the husband, the first clause [too must refer to even] what she herself brings? — But in the first clause he cannot annul, though [her vow forbade even what] she herself brings; To Part b