Ibrahim Nakha'i (may Allah have mercy on him) said: "If a man marries a virgin slave-girl and before consummation she commits fornication, then separation should be made between them and there will be no dowry."
Hadith Referenceسنن سعید بن منصور / كتاب النكاح / 2045
Hadith Takhrij«أخرجه سعيد بن منصور فى «سننه» ترقيم الدرالسلفية برقم:، 858، 860، 868»