An extract from "The Corridor" (7)
I believe the answer is:
passage
I believe this clue is a double definition.
'an extract' is the first definition.
(I have seen 'Literary extract' mean 'passage' so perhaps 'extract' could also mean 'passage')
'corridor' is the second definition.
(I've seen this in another clue)
'from the' is the link.
(Other definitions for passage that I've seen before include "Section of text; journey" , "Short section of text" , "Transit - part of book etc" , "Sea or air journey" , "Aisle" .)