[Noun A] + といわず + [Noun B] + といわず
A and B are typically related or contrasting items representing a whole (e.g. 手/足, 昼/夜, 平日/休日)
The structure なうんnoun ああるA + といわず + なうんnoun bB + といわず is used to express that something applies to both A and B without distinction – meaning "whether it's A or B," "not just A or B, but both (and everything in between)." It emphasizes that the action or state covers all cases, not limited to the specific nouns mentioned.
A and B are typically related or contrasting items that together represent the whole of something. The implication is that whatever follows applies everywhere or to everything, not selectively.
This pattern has a slightly literary or emphatic tone compared to more colloquial ways of saying "both A and B." It often carries an overtone of excess or thoroughness – the situation is so pervasive that you cannot single out just one part. The sentence that follows typically describes something remarkable, extreme, or noteworthy.
While ああるAもbBも simply states "both A and B," といわず~といわず adds the nuance that the distinction between A and B doesn't even matter because the whole situation is affected. It is more emphatic and dramatic.