And the Prophet ( صلی اللہ علیہ وسلم ) said (to the claimant): "You should present your two witnesses, otherwise the decision will be based on the oath of the defendant." Qutaiba narrated, from Sufyan, from (the judge of Kufa) Ibn Shubruma, who said that (the judge of Madinah) Abu Al-Zinad discussed with me about the acceptance of the testimony of only one witness along with the oath of the claimant. So I said: Allah the Exalted says «واستشهدوا شهيدين من رجالكم فإن لم يكونا رجلين فرجل وامرأتان ممن ترضون من الشهداء أن تضل إحداهما فتذكر إحداهما الأخرى» "And take two witnesses from among your men; but if there are not two men, then one man and two women from those whom you accept as witnesses, so that if one of the two women errs, the other can remind her." I said: If the testimony of only one witness along with the oath of the claimant were sufficient, then what would be the need to say that if one forgets, the other can remind her? What benefit would there be in the other woman reminding her?

Narrated Ibn Abu Mulaika: Ibn `Abbas wrote that the Prophet gave his verdict on the basis of the defendant's oath.