Passionate desire reproved, having to be purified (9)

I believe the answer is:

lustrated

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'purified' is the definition.
(lustrating is a kind of purifying)

'passionate desire reproved' is the wordplay.
'passionate desire' becomes 'lust' (I've seen this in another clue).
'reproved' becomes 'rated' (I can't justify this - if you can you should give a lot more credence to this answer).
'lust'+'rated'='LUSTRATED'

'having to be' acts as a link.

Can you help me to learn more?

(Another definition for lustrated that I've seen is " ritually cleansed".)

I've seen this clue in The Guardian.

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