Three in rugby handle intention (5,4)

I believe the answer is:

field goal

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'three in rugby' is the definition.
The answer and definition can be both acts as well as being singular nouns.
Maybe you can see an association between them that I can't see?

'handle intention' is the wordplay.
'handle' becomes 'field' (fielding is a kind of handling).
'intention' becomes 'goal' (I've seen this in another clue).
'field'+'goal'='FIELD GOAL'

Can you help me to learn more?

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

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