Rely on explanation in financial document (4,9)
I believe the answer is:
bank statement
'document' is the definition.
(bank statement is a kind of document)
'rely on explanation in financial' is the wordplay.
I cannot quite see how this works, but
'rely' could be 'bank' and 'bank' is found within the answer.
'on' could be 'at' (I've seen this in other clues) and 'at' is located in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for bank statement that I've seen before include "note of available funds" , "Printed facts and figures" , "Listing for balance" , "showing an indication of interest?" , "Record of financial transactions" .)