Being unselfish, mum gets a token of love (7)
I believe the answer is:
sharing
'being unselfish' is the definition.
('sharing' can be similar in meaning to 'unselfish')
'mum gets a token of love' is the wordplay.
'mum' becomes 'sh' (I've seen this in other clues).
'gets' is a charade indicator (letters next to each other).
'token of love' becomes 'ring' (I've seen this before).
'sh'+'a'+'ring'='SHARING'
(Other definitions for sharing that I've seen before include "Possessing in common" , "Apportioning" .)