House rent receipt from wife

I am a central Govt employee. The house we were staying belonged to my mother in law and I was producing rent receipt from her for income tax exemption. Last Decenmber she has passed away and my wife has inherrited the house. My wife is an income tax assessee and not caliming house rent exemption. Is it legal  for me to pay house rent to my wife  and produce the receipt for incometax exemption? Pl. advice