Rents show no restraint (3,3)

I believe the answer is:

let rip

This clue is a double definition.

'rents' is the first definition.
('let' and 'rip' are synonyms of 'rent')

'show no restraint' is the second definition.
(to let rip is to do something without restraint)

(Other definitions for let rip that I've seen before include "Release pent-up feelings" , "Hasten" , "Act without restraint" , "Go wild" , "Act unrestrainedly" .)

I've seen this clue in The Guardian.

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