If this person 人 is bending a leg, it becomes this radical. (Further radicals with „person“ are: sitting 匕 sitting cross-legged 夂, lying , skilled 才, bending マ,卩, slumped 㔾 or husband 夫)
Actually a slumped person 巴 is shown. But the explanations use it as "doorknob". This free interpretatin is based on the character: 把 (bǎ, bà), which is in combination of a hand 扌 and means: doorknob.
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