What is the ruling of Sharia regarding the wife returning to her husband after he said to her: "By divorce, you will not stay in it, today," then "You are divorced, divorced, divorced," then "You are forbidden to me"?

The ruling on a man swearing an oath by divorce depends on his intention behind the oath. His statement to his wife, "You are divorced, divorced, divorced," counts as one divorce unless he intended the repetition to mean three divorces, in which case it counts as three. As for his statement, "You are forbidden to me," its ruling refers back to his intention: if he intended dhul-dhahir (a form of divorce-like pronouncement), then it is dhul-dhahir; if he intended an irrevocable divorce (talaq ba'in), then it is an irrevocable divorce; otherwise, it is a revocable divorce (talaq raj'i). If he intended it as an oath or did not intend anything specific, then it is an oath for which expiation is required. Therefore, it is recommended to consult trustworthy scholars.