It was narrated from Ibn Abbas that:
the Messenger of Allah said: "A widow has more right (to decide) concerning herself than her guardian, and a virgin should be consulted". It was said: "O Messenger of Allah, a virgin may be too shy to speak." He said: "Her consent is her silence." (RU)
English reference (RU): Vol. 3, Book 9, Hadith 1870 (RU)
Arabic reference (RU): Book 9, Hadith 1943 (RU)