〜といわず〜といわず
whether X or Y, all over, everywhere
Noun A + といわず、Noun B + といわず
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AといわずBといわず means "not just A or B, but everywhere, all of it": 手といわず足といわず、泥だらけだ, "he's covered in mud, hands, feet, everywhere".
The two nouns are examples from a whole: parts of the body, times of day, places. The second half says something applies to all of it, often with だらけ, いつも or ずっと.
It's literally "without calling it A, without calling it B", as if there's no point distinguishing.
Compare といい〜といい, which picks two aspects to support an evaluation. といわず is about how widespread something is.
Examples
手といわず足といわず、泥だらけだ。
He's covered in mud, hands, feet, everywhere.
昼といわず夜といわず、彼は働き続けた。
Day and night, he kept on working.
平日といわず週末といわず、店はいつも混んでいる。
Weekdays or weekends, the shop is always packed.
家の中といわず外といわず、ごみが散らかっている。
There's rubbish everywhere, inside and outside the house.
顔といわず体といわず、蚊に刺された。
I got bitten by mosquitoes all over, face and body.