بسم الله الرحمن الرحيم
(Fatwa: 1182/764/L=9/1434)
In the question mentioned above, when the husband confirms to give three talaqs then all the three talaqs took place on his wife, no matter whether the wife and father in law accept it or not.
Allah knows Best!
Darul Ifta,
Darul Uloom Deoband
