Red in it he found to be congenital (9)

I believe the answer is:

inherited

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'to be congenital' is the definition.
(thesaurus)

'red in it he' is the wordplay.
'red in it he' anagrams to 'INHERITED'.
But, I am not sure how this is indicated.

'found' is the link.

Can you help me to learn more?

(Other definitions for inherited that I've seen before include "Received from an ancestor" , "Received from forebears" , "Was left" , "Came into" , "handed down" .)

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

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