[ULPIANUS libro uicesimo octauo ad Sabinum. ] §12.2.33.prQui per salutem suam iurat, licet per deum iurare uidetur (respectu enim diuini numinis ita iurat), attamen, si non ita specialiter iusiurandum ei delatum est, iurasse non uidetur: et ideo ex integro sollemniter iurandum est.
[ULPIAN, Book 28 on Sabinus.] He who swears by his own safety, although he seems to swear by God (for he swears in this way out of respect for the divine power), nevertheless, if the oath was not tendered to him specifically in this manner, is not considered to have sworn; and therefore, the oath must be taken solemnly anew.