Spirit said to show spirit (5)
I believe the answer is:
djinn
'spirit' is the definition.
(spirit in Islam)
'spirit said' is the wordplay.
'spirit' becomes 'gin' (alcoholic spirit).
'said' shows a homophone (sound like).
'gin' sounds like 'DJINN'.
'to show' is the link.
(Other definitions for djinn that I've seen before include "Mythological spirit" , "Spirit of Arabian legend" , "Spirit of Arabian mythology" , "Spirits (in Muslim mythology)" .)