Organise the karate rally (4,5)
I believe the answer is:
take heart
'rally' is the definition.
Although both the answer and definition are verbs in their base form, I don't see how they can define each other.
'organise the karate' is the wordplay.
'organise' indicates anagramming the letters.
'the'+'karate'='thekarate'
'thekarate' with letters rearranged gives 'TAKE HEART'.
Can you help me to learn more?
(Other definitions for take heart that I've seen before include "Have courage, acquire cardiac boost" , "Don't be discouraged - seek cardiac support (4,5)" , "to leave outside leaves of lettuce" , "how to gain courage" , "Be encouraged or cheered up in cardiac way" .)