He Must Take Her Back With a New Contract
Question :
My father divorced his wife one time when he was angry due to a dispute between them. Two years have passed since the divorce; what is the ruling if he wishes to take her back?
Answer:
She returns to him with a new contract, if this divorce was the first and was not preceded by another divorce. In that case, he may propose to her again, make a new contract with her, and pay her a dowry upon which they are both agreed. This divorce is counted and he has two divorces left.
Source:
Ibn Jibreen
Fatawa Islamiyah, Vol. 6 Page 72