Is it permissible to use a weak hadith for reference?

The questioner : Another question, is it permissible to use a weak hadith for reference?

The Shaykh : And what do you mean by using it for reference?

The questioner : I mean when someone, I mean a person, wants to deliver a lecture or a sermon, and he does not have an authentic hadith in mind, and he wants to clarify it with a weak hadith.

The Shaykh : Yes, and he knows that it is a weak hadith?

The questioner: Yes.

The Shaykh : He knows that it is a weak hadith?

The questioner : Yes, he knows that it is a weak hadith, is it permissible for him to use it for reference?

The Shaykh : Listen, may Allah guide you, he knows that it is a weak hadith?

The questioner: Yes.

The Shaykh : If he makes it clear that it is a weak hadith, then it is permissible; otherwise, it is not.

The questioner : Yes, may Allah reward you with good.

The Shaykh : And beware of that.