Is it permissible to register the house in the name of the third wife to deprive the children from previous wives of their inheritance, and do they have a right to this house even though it is the sole dwelling of the last wife?

The children of the deceased from all his wives are his heirs, and this includes the house he lived in with the third wife, regardless of maintenance expenses.

If the house was registered in the name of the third wife as a will effective after death, then it is a will to an heir, which is impermissible unless approved by the other heirs.

If it was a gift that was not taken possession of during the lifetime of the giver, it falls under the ruling of a will.

However, if the wife took possession of it during the lifetime of the giver, then it is, in principle, a valid gift. But if the intention behind it was to deprive the heirs, then it is an act of disobedience.

There is a difference of opinion among jurists regarding a husband gifting his house to his wife. Those who permitted it stipulated that the house must be vacated and handed over to the wife.