The personal representative shall produce receipts or canceled checks for the expenses and charges which he shall have paid, which receipts shall be filed and remain in court until the probate has been completed and the personal representative has been discharged; however, he may be allowed any item of expenditure, not exceeding twenty dollars ($20), for which no receipt is produced, if such item be supported by his own oath, but such allowances without receipts shall not exceed the sum of three hundred dollars ($300) in any one (1) estate. [Res. 06-R-53 § 9.0(D)(35.07.190), 5/3/2006.]