A man wants to take a second wife – would the second wife be sinning?

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Going to his second wife, who lives with his mother, on a day that is not hers
The ruling on plural marriage and the wisdom behind it

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Related Answers:
Giving a gift to the wife who gives birth and not to the other wife
She wants to marry a man but the law does not permit plural marriage. What should she do?
If the husband is unfair in his division of time (between co-wives), he must make it up
Going to his second wife, who lives with his mother, on a day that is not hers
The ruling on plural marriage and the wisdom behind it

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