Regular payment (7)
'regular payment' is the definition.
(stipend is a kind of regular payment)
This is the entire clue.
(Other definitions for stipend that I've seen before include "Sum of money" , "Soldier's pay" , "Wage" , "Clergyman's salary" , "Money paid periodically" .)
(Other definitions for standing order that I've seen before include "Instruction for bank to make regular payments" , "Regular way to pay" , "gets you on your feet!" , "rise!" , "Instruction to bank for payment at regular intervals" .)