What is the ruling on saying “It is forbidden for me,” and what is the expiation for that?

The questioner : May Allah reward you with good. I have a second question. About saying the word “haram (forbidden).” For example, my wife asks for something, and if I neglect it or something like that, I say, “It is forbidden for me to give you this a second time,” and so on, as a form of threat.

The Shaykh : No, no, do not say that.

The questioner : I mean, he says, “This has become forbidden for me; there is something on me regarding it.”

The Shaykh : Okay, you said this, and then what?

The questioner : Then, for example, they give it to her, or later she needs it and he gives it to her.

The Shaykh : Yes. First, you must not get into the habit of this; do not return to it. Second, you must feed ten poor people.