Saying Something under Compulsion (Ikraah)

Bukhari :: Book 9 :: Volume 85 :: Hadith 79

Narrated 'Aisha:

I asked the Prophet, "O Allah's Apostle! Should the women be asked for their consent to their marriage?" He said, "Yes." I said, "A virgin, if asked, feels shy and keeps quiet." He said, "Her silence means her consent."