The Originator is He of the heavens and the earth: and when He wills a thing to be, He but says unto it, "Be" -and it is.
Al-Baqra (The Cow) Verse 117
I heard Allah's Apostle saying, "The rights of a Muslim on the Muslims are to follow the funeral processions, to accept invitation and to reply the sneezer
Sahih Bukhari: Volume 2, Book 23, Number 332