Hadiths: 7.66 to 7.68

7.66:
Narrated Sahl bin Sa`d: A woman came to Allah's Apostle and
said, "I present myself (to you) (for marriage). She stayed
for a long while, then a man said, "If you are not in need of
her then marry her to me." The Prophet said, "Have you got
anything m order to pay her Mahr?" He said, "I have nothing
with me except my Izar (waist sheet)." The Prophet said, "If
you give her your Izar, you will have no Izar to wear, (so go)
and search for something. He said, "I could not find
anything." The Prophet said, "Try (to find something), even if
it were an iron ring But he was not able to find (even that)
The Prophet said (to him). "Do you memorize something of the
Qur'an?" "Yes. ' he said, "such Sura and such Sura," naming
those Suras The Prophet said, "We have married her to you for
what you know of the Qur'an (by heart).

7.67:
Narrated Abu Huraira: The Prophet said, "A matron should not
be given in marriage except after consulting her; and a virgin
should not be given in marriage except after her permission."
The people asked, "O Allah's Apostle! How can we know her
permission?" He said, "Her silence (indicates her permission).

7.68:
Narrated `Aisha:
I said, "O Allah's Apostle! A virgin feels shy." He said, "Her
consent is (expressed by) her silence."