Is it permissible for the wife to save some of her money and her husband’s money without him knowing?

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Check below answers in case you are looking for other related questions:
Can a woman donate any of her money without her husband’s permission?
Wife disposing of her own money without her husband’s knowledge

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Related Answers:
Do parents have any rights to the wealth of a married daughter?
Can she give charity from her housekeeping money without her husband’s knowledge?
The wife is not entitled to maintenance if she refused to go back to her husband’s house
Can a woman donate any of her money without her husband’s permission?
Wife disposing of her own money without her husband’s knowledge

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