Is there no credit in wiping it clean? (5)
I believe the answer is:
slate
'clean?' is the definition.
The definition and answer can be both to do with contact as well as being verbs in their base form.
Maybe there's a link between them I don't understand?
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for slate that I've seen before include "Criticise - outdated school equipment" , "Blast" , "Roofing material or credit recorder" , "Grey stone; tab" , "Scold; hard rock" .)