Okla. Stat. tit. 46 § 3
A mortgage upon real estate may be substantially in the following form, to wit:
Know all men by these Presents: That, ......and ......of County, in the ......of ......part ......of the first part, have mortgaged and hereby mortgage to ......of ......County of ......part ......the second part, the following described real estate and premises, situated in ......County, State of Oklahoma, to-wit: ......, with all the improvements thereon and appurtenances thereunto belonging, and warrant the title to the same; ......This mortgage is given to secure the principal sum of dollars, with interest thereon at the rate of ......per centum per annum, payable ............annually from ...... according to the terms of ......certain promissory note ...... described as follows, to-wit: ......
Dated this ......day of ......, 19....
Okla. Stat. tit. 46, § 3