All fees and sums paid by either party for fees of witnesses and other necessary expenses, in any civil action or proceeding, shall be proved by affidavit of the party or of some person knowing the same to have been paid; and all such fees shall be taxed and collected from the party ordered or adjudged to pay the costs.
Okla. Stat. tit. 28, § 102
Costs in civil proceeding to be proved by affidavit - Taxation and collection
R.L. 1910, § 3241.
Official source: Oklahoma Legislature. Reproduced from public-domain Oklahoma statutes; confirm against the official source for the current text. Not legal advice.