It's wrong to hang on to someone's pay (7)
I believe the answer is:
stipend
'someone's pay' is the definition.
'stipend' can be an answer for 'pay' (I've seen this in another clue). I'm not sure about the 'someone's' bit.
'it's wrong to hang on' is the wordplay.
'wrong' indicates an anagram.
'to hang' becomes 'pend' (I've seen this in another clue).
'on' means one lot of letters go next to another.
'its' with letters rearranged gives 'sti'.
'sti'+'pend'='STIPEND'
'to' is the link.
Can you help me to learn more?
(Other definitions for stipend that I've seen before include "Regular payment" , "Pay (clerical)" , "Clergyman's salary" , "Minister's salary" , "minister's wages" .)