Miswâk is a span long piece of stick cut from a branch of a tree of Erâk (Peelo), which grows in Arabia. In case an erâk branch is not available, branches of olive trees or others can replace it. But not a pomegranate branch because it is bitter and will cause the things eaten and drunken to taste bitter. It is sunnat-i muakkada to use a miswâk when performing an ablution. A hadîth-i-sherîf declares: ‘The namâz which is performed after using a miswâk is seventy-fold superior to the namâz without a miswâk.’ A miswâk must be straight, as wide as the second small finger, and a span long. Shaving it about two centimetres from the straight end, you keep this part in water for a couple of hours. When you crush it, it will open like a brush. The miswâk has more than thirty advantages. Firstly, it causes one to die with îmân in one’s last breath. http://www.hakikatkitabevi.com/english/english.htm
Let me be more specific. Can you explain to me how it is used in the koran when referring to ones wife?
Man you need to take some islamic studies classes, because you guys definately don't know what the hell your talking about.