Type of mortgage Mo and Ned went to arrange (9)
I believe the answer is:
endowment
'type of mortgage' is the definition.
(I've seen this before)
'mo and ned went to arrange' is the wordplay.
'and' is a charade indicator (letters next to each other) (I've seen this in other clues).
'to arrange' indicates an anagram.
'ned'+'went'='nedwent'
'mo' put after 'nedwent' is 'nedwentmo'.
'nedwentmo' with letters rearranged gives 'ENDOWMENT'.
(Other definitions for endowment that I've seen before include "Contract" , "Personal quality - type of mortgage" , "(Income from) testamentary provision" , "Grant" , "source of income" .)