Passage right inside bar (7)
I believe the answer is:
excerpt
'passage' is the definition.
(I know that excerpt is a type of passage)
'right inside bar' is the wordplay.
I cannot quite understand how this works, but
'right' could be 'r' (common abbreviation) and 'r' is found in the answer.
'bar' could be 'except' (both can mean 'not including') and 'except' is found within the leftover letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for excerpt that I've seen before include "Extracted passage from book" , "Piece from book etc" , "Just a few words" , "Literary taste" , "scrap?" .)