La main gauche nettoie la droite (proverbe Ngombe, Basonge – République Démocratique du Congo (RDC)). – L’homme et la femme s’entraident.
The left hand cleans the right (Ngombe and Basonge proverb – Democratic Republic of Congo (DRC)). – The man and the woman help each other.
African Heritage 
It reminds me of the saying “one hand washes the other”, but that proverb is not in the context of marriage.
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Yes… you are right…
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Thanks. I’m glad you noticed that, too.
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