Extending the hair with a piece of cloth.

This hadeeth was reported by al-Bukhaari, Muslim
and others. What it refers to is those who add hair extensions taken from the
hair of other people, and the women who ask to have this done. The reason why
this is forbidden is that it is false adornment which could be used to deceive
or cheat others in matters of marriage and so on. As al-Bukhaari narrates from
Mu’aawiyah, the Prophet (peace and blessings
of Allaah be upon him) called this falsehood. If we understand the hadeeth and
the wisdom behind this prohibition, we will see that it does not include the
wearing of ribbons and flower-shaped decorations by young girls. As long as
wearing ribbons on the braids or necklaces made of white ribbon are not customs
that belong exclusively to the kuffaar, there is nothing wrong with doing these
things, because the principle is that everything is allowed unless it is expressly
forbidden. But the girls who do these things should cover these decorations
in front of people who are not their mahrams (blood relatives whom they are
permanently forbidden to marry), if they are at the age where covering themselves
is obligatory. But everything that is done exclusively by the kuffaar is haraam,
because the Prophet (peace and blessings of Allaah
be upon him) forbade us to imitate or resemble them.