Passage from old pamphlet (7)
I believe the answer is:
extract
'passage' is the definition.
(extract is a kind of passage)
'old pamphlet' is the wordplay.
'old' becomes 'ex'.
'pamphlet' becomes 'tract' ('tract' can be a synonym of 'pamphlet').
'ex'+'tract'='EXTRACT'
'from' is the link.
(Other definitions for extract that I've seen before include "Pluck out" , "Take out by force, say a tooth" , "Forcibly draw out" , "Short passage (of text)" , "Part" .)