身に覚えのない
Meanings
1
expression, noun-modifying (irregular)
having no memory of doing; having nothing to do with; having no knowledge of
Fixed phrase used to deny involvement or memory of an action, often in the pattern 身に覚えのないこと or 身に覚えがない. The second gloss 'having nothing to do with' is a contextual extension, not a separate core meaning.
See also: 身に覚えのある
I received a bill for something I have no memory of.
He was arrested for a crime he had nothing to do with.