A mantra is stirring for a listener (9)
I believe the answer is:
samaritan
'a listener' is the definition.
The definition and answer can be both people as well as being singular nouns.
Maybe you can see an association between them that I can't see?
'a mantra is stirring' is the wordplay.
'stirring' indicates an anagram.
'a'+'mantra'+'is'='amantrais'
'amantrais' is an anagram of 'SAMARITAN'.
'for' acts as a link.
Can you help me to learn more?
(Other definitions for samaritan that I've seen before include "Helpful type" , "Good person who helps another in distress" , "One offering help to the suicidal" , "Good man of the Bible" , "One who helps" .)