And those who accuse their wives, of fornication, but have no witnesses, to [substantiate] this, except themselves — which happened with some Companions — then the testimony of one of them (fa-shahādatu ahadihim, the subject) shall be to testify [swearing] by God four times (araba‘a shahādātin, is in the accusative as a verbal noun) that he is indeed being truthful, in accusing his wife of committing fornication,