Sunnan Abu Dawud Collection: ::Book Number 38:: Hadith # 4423
Narrated Sahl ibn Sa'd: A man came to the Prophet (peace_be_upon_him) and confessed before him that he had committed fornication with a woman whom he named. The Apostle of Allah (peace_be_upon_him) sent for the woman and asked her about it. But she denied that she had committed fornication. So he inflicted the prescribed punishment of flogging on him, and let her go.