Promise to distribute wares (5)
I believe the answer is:
swear
'promise' is the definition.
(thesaurus)
'distribute wares' is the wordplay.
'distribute' indicates anagramming the letters (I've seen this in other clues).
'wares' is an anagram of 'SWEAR'.
'to' is the link.
(Other definitions for swear that I've seen before include "Vow, attest" , "Solemnly promise" , "Curse" , "Emit oath or take vow" , "Use bad language" .)