God said to Moses:
“Verily, I am Allah!  There is no other god except Me.  So worship Me, and perform the prayer for My remembrance.”

     (Quraan, 20:14)

"Let whosoever believes in Allah and in the Last Day either speak good or be silent. Let whosoever believes in Allah and in the Last Day honour his neighbour. Let whosoever believes in Allah and in the Last Day honour his guest."

     al-Bukhaari & Muslim