What is the ruling on pre-seminal fluid that comes out during foreplay?

The questioner : There is a question, actually, regarding what comes out of the penis during foreplay?

The Shaykh: Yes.

The questioner : If something happens in a person's underwear as a result of this foreplay, and then it dries; is it sufficient to sprinkle it, or must it be washed?

The Shaykh : No, it must be washed.

The questioner : Even if it dries?

The Shaykh : What is sufficient to wipe is only semen, but as for pre-seminal fluid, it must be washed.

The questioner : Shaykh, you had a question yesterday but you didn't answer...

Another questioner : Are we not going to discuss it?

The Shaykh : No, I do not allow you to interrupt; because I thought you wanted to draw his attention to something, so that is between you and him.

The questioner : ...the question itself.

The Shaykh : He should tell him then, so that he does not interrupt...