He gave her a third talaaq (divorce) and claimed that he said that in anger

No File Exists
Check below answers in case you are looking for other related questions:
Ruling on divorce at a moment of anger
He was told that his wife had revived a previous forbidden relationship so he divorced her

No File Exists
Related Answers:
Getting a civil divorce to avoid prison for the husband who has another wife
If he says: “If I marry So and so then she is divorced”
He said to his wife: It is haraam for us to speak to one another if you go to such and such a place
Ruling on divorce at a moment of anger
He was told that his wife had revived a previous forbidden relationship so he divorced her

Recommended answers for you:
Are the Sufi shaykhs really in contact with Allaah?
Does touching the penis invalidate wudoo’
Is it permissible for Muslims to vote for kaafirs who seem to be less evil?
Rulings on the mourning of a woman whose husband has died
Do women have to wear niqaab?