What is the ruling on tasting a wife's saliva during the day in Ramadan?

The questioner : Our Shaykh, here is a man, as you say, "Masha'Allah! May Allah keep you safe." This man himself—Masha'Allah!—is green. He says that during the day in Ramadan, he tasted his wife's saliva, and his saliva mixed with hers, so he swallowed her saliva. Does this break his fast? And regarding the phrase you use: "What is the ruling in this?" and "What is the evidence?" or "with the evidence?" Does he break his fast if he swallowed her saliva?

The Shaykh : Yes, if it was intentional, he breaks his fast, of course.

The questioner : If he swallowed it intentionally?

The Shaykh: Yes.

The questioner : And it was during his caressing her and kissing her, so this would not be the case.

The Shaykh : Is it permissible for him to have intercourse with her during his caressing her? Right? So if he had intercourse with her—for example—does this take it out of being intentional? Of course not, so he is intentional, and therefore the major expiation falls upon him.

The questioner : Yes.

The Shaykh : So if he is intentional, he breaks his fast and he has the sin of one who breaks the fast by any means other than intercourse, and he does not have to pay an expiation; because why is it called an expiation? Because it mitigates the ill omen of the sin; and therefore the majority of scholars...