Section 210(4) in The Navy (Pension) Regulations, 1964
(4)How recovery is made. - If the competent authority decides that the overpayment should be recovered, recovery shall normally be effected in instalments of one-third of the pension unless otherwise specified in the orders. If no pension is payable, the method of recovery shall be decided by the competent authority [in consultation with the Controller of Defence Accounts (Pensions) in the cases of pensions drawn in India.]