And God's is the east and the west: and wherever you turn, there is God's countenance. Behold, God is infinite, all-knowing.
Al-Baqara (The Cow) Verse 115
Allah's Apostle said, "If I had not found it hard for my followers or the people, I would have ordered them to clean their teeth with Siwak for every prayer."
Sahih Bukhari: Volume 2, Book 13, Number 12