(a) Every administrator, upon qualification (which qualification may be done at any time if appointed at a regular term), shall take and subscribe an oath or affirmation in substantially the following form:

"I do solemnly swear (or affirm) that _______________________, deceased, died intestate so far as I know or believe, and that I will well and truly administer the estate in accordance with the laws of Georgia. So help me God."

(b) The oath or affirmation of an administrator as provided in subsection (a) of this Code section may be subscribed before the judge or clerk of any probate court of this state. The probate court appointing the administrator shall have the authority to grant a commission to a judge or clerk of any court of record of any state to administer the oath or affirmation.