What is the ruling on a husband who said to his wife, "You are divorced three times" in one instance, with the intention of teaching her about divorce? Does this count as one divorce?

Uttering the words of divorce in the context of narrating, studying, illustrating, or similar situations does not constitute a divorce. What a person imagines as an intention of divorce through these phrases is merely a whisper (waswasa) that holds no weight. There is no divorce, no expiation, and no sin. However, one must beware of indulging in these whispers and yielding to them, due to the evil and corruption that results therefrom.