2,770. Prohibiting a Wife's Handiwork

Hilchos Nedarim 5:15

If a man tells his wife, “The work of your hands is to me like an offering,” “to my mouth like an offering” or “on my mouth like an offering,” he may not eat anything exchanged for her handiwork or any produce that grows from her labor. If he says that he won’t eat or taste it, then if the produce of her work is something whose seed decomposes, he may eat things exchanged for it and what grows from it. If it was something whose seed doesn’t decompose, even what grows from what grows from it is prohibited. The original produce isn't nullified by growth of a larger quantity because the prohibition of that original produce can be released. As we have discussed, something that can be permitted isn’t nullified through mixing with a permitted majority.

Hilchos Nedarim 5:16

If someone prohibits his produce to another person by a vow or an oath, there is a doubt regarding the produce that grows from it and the things that are exchanged for it. Accordingly, these things are prohibited to the second person but if he violates and benefits from them, then he has benefited.