Part with the said wad of money (4)
I believe the answer is:
role
'part' is the definition.
(eg a theatrical role)
'said wad of money' is the wordplay.
'said' shows a homophone (sound like).
'wad of money' becomes 'roll' (I've seen this in another clue).
'roll' is a homophone of 'ROLE'.
'with the' is the link.
(Other definitions for role that I've seen before include "Character" , "Impersonation" , "Part in play, film etc" , "Part (in drama)" , "Duty" .)