Research Yeats. Puzzling? Don't worry! (4,4)

I believe the answer is:

rest easy

'don't worry' is the definition.

'research yeats puzzling?' is the wordplay.
'research' becomes 'res' (academic abbreviation).
'puzzling?' indicates an anagram.
'yeats' with letters rearranged gives 'teasy'.
'res'+'teasy'='REST EASY'

I've seen this clue in The Everyman puzzle in The Observer.

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