Is it permissible for them to register what the father owns in one of the sons’ names because their father’s wife wants to do that for herself?

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Check below answers in case you are looking for other related questions:
He gave his infant grandson a car as a gift, but he did not give anything to his other grandchildren
Can perfume be given as a gift to a woman who will go out wearing it in the street?

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Related Answers:
Buying back a gift from someone other than the one to whom it was given
Her mother gave her brother a gift to the exclusion of his siblings. Is this gift permissible?
Accepting gifts and donations from haraam wealth
He gave his infant grandson a car as a gift, but he did not give anything to his other grandchildren
Can perfume be given as a gift to a woman who will go out wearing it in the street?

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