Written in Sanskrit, he takes letter to Greeks (5)

I believe the answer is:

theta

'letter to greeks' is the definition.
(letter from the Greek alphabet)

'written in sanskrit he takes' is the wordplay.
'written in' indicates a hidden word.
'THETA' is hidden within 'sanskrit he takes'.

(Other definitions for theta that I've seen before include "letter from Athens" , "Letter to the Corinthians" , "Greek letter equivalent to th" , "classic character?" , "Letter before iota" .)

I've seen this clue in The Telegraph and The Times.

Want a hint initially instead of a full solution? Install my app