Writer Virginia, receiving mantra, is to come back (6)
I believe the answer is:
asimov
'writer' is the definition.
(Isaac Asimov)
'virginia receiving mantra is to come back' is the wordplay.
'virginia' becomes 'va' (US state abbreviation).
'receiving' indicates putting letters inside.
'mantra' becomes 'om' (I can't justify this - if you can you should believe this answer much more).
'to come back' is a reversal indicator.
'om'+'is'='omis'
'va' placed around 'omis' is 'vomisa'.
'vomisa' backwards is 'ASIMOV'.
Can you help me to learn more?
(Other definitions for asimov that I've seen before include "Isaac -, US sci-fi writer" , "Author of "Three Laws of Robotics"" , "Isaac --, science fiction author" , "He wrote about robots" , "Isaac --, sci-fi author" .)