Bombast of husband provoked a riot (3,3)
I believe the answer is:
hot air
'bombast' is the definition.
(I've seen this in another clue)
'husband provoked a riot' is the wordplay.
'husband' becomes 'h' (abbreviation).
'provoked' is an anagram indicator.
'a'+'riot'='ariot'
'ariot' with letters rearranged gives 'otair'.
'h'+'otair'='HOT-AIR'
'of' acts as a link.
(Other definitions for hot air that I've seen before include "Bull" , "Talking nonsense" , "Empty bombast often found in balloon" , "Gas" , "Guff" .)