Saying Something under Compulsion (Ikraah)

Bukhari :: Book 9 :: Volume 85 :: Hadith 78

Narrated Khansa' bint Khidam Al-Ansariya:

That her father gave her in marriage when she was a matron and she disliked that marriage. So she came and (complained) to the Prophets and he declared that marriage invalid. (See Hadith No. 69, Vol. 7)