Abu Hurayrah (may Allah be pleased with him) said that the Prophet (peace and blessings be upon him) said: "A previously married woman is not to be married until she is consulted, and a virgin is not to be married until her permission is sought." It was said: O Prophet of Allah! How will her permission be given? He said: "If she remains silent, that is her consent."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب النكاح / 13682