I’m firmly fixed in my place of rest (8)

I believe the answer is:

imbedded

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'my place of rest' is the definition.
I can't judge whether this defines the answer.

'i'm firmly fixed' is the wordplay.
'firmly fixed' becomes 'bedded' (I can't explain this - if you can you should believe this answer much more).
'im'+'bedded'='IMBEDDED'

'in' acts as a link.

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(Other definitions for imbedded that I've seen before include "Deeply fixed; deb did me (anag.)" , "Firmly implanted" .)

I've seen this clue in the Sydney Morning Herald.

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