Crossword Genius

Taking to quarters wrapped in rugs, leaving nothing to chance (8)

Ross

I believe the answer is:

ensuring

I'm a little stuck... Click here to teach me more about this clue!

'taking to quarters wrapped' is the definition.
I can't tell whether this definition defines the answer.

'in rugs leaving nothing to chance' is the wordplay.
I cannot really understand how this works, but
'in' is found in the answer.
an anagram of 'rugs' is 'surg' which is present in the left over letters.
The remaining letters 'en' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

(Other definitions for ensuring that I've seen before include "Making certain" , "Maklng certain" , "Making safe" .)

I've seen this clue in the Evening Standard.
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