Discharge from dust collector produced by Ashe's partner (9)
I believe the answer is:
sackcloth
'by ashe's partner' is the definition.
I can't tell whether this defines the answer.
'discharge from dust collector' is the wordplay.
'discharge' becomes 'sack' ('sack' can be a synonym of 'discharge').
'from' is a charade indicator (letters next to each other).
'dust collector' becomes 'cloth' (I am not sure about this - if you are sure you should believe this answer much more).
'sack'+'cloth'='SACKCLOTH'
'produced' acts as a link.
Can you help me to learn more?
(Other definitions for sackcloth that I've seen before include "part of repentance" , "Penitent's garb" , "With ashes, it's a sign of repentance" , "Penitential attire" , "Coarse cloth, with ashes it symbolises penitence" .)