Can a property under gift deed be claimed by any other family member

I am hindu.my father in law and his younger brother had a joint ancestral property.The younger brother and his wife died without any children 7years ago.my father in law died 8/2/2018.Till now the property is joint and undivided.my father in law had two daughters and tow sons.my father in law did a gift dead of this property in the name of his elder son and deprived my husband.can my husband challenge the dead