Prohibition of the wife of the wife's father

The questioner:
He says: Honorable Shaykh, may Allah grant you success, is the wife of my wife's father forbidden to me?

The Shaykh:
No, what is your relationship to her? She is forbidden to me. I say she is forbidden to you because she is a stranger to you. And who is she?

The questioner:
The wife of my wife's father.

The Shaykh:
The wife, the father.

The questioner:
The wife.

The Shaykh:
And generally, for the wife, yes, she is forbidden to him. She has no relationship to you, yes.