Quote from Gabfly1:
It is true. I lived in Saudi Arabia for 3 years and attended the "wake" for a Saudi colleague's mom. (I'm not sure what they called it, but friends and relatives attended his home to express condolences and pass a few hours with him.) She was buried within one day of her death. I asked about this and was advised that this was the custom.
Then maybe it makes a difference which kind of muslim you are, or else maybe my friends werent as strict in their religious beliefs, because i vividly remember my buddies moms funeral, because the burial was the strangest thing i had ever seen.
Once we got to the grave site, They handed the body in some kind of box over everyones heads down a line, and then my friend, his dad, and his moms brother got into the grave and the body which was just wrapped in a garb was taken out of some kind of religious box it was in, (similar to a casket but its used for everyone), and handed to them in the grave, then they all climbed out and everyone then took turns shovelling dirt onto her while they chanted something i didnt know what it meant. Once the grave is filled with dirt everyone puts incense into the dirt. I remembered thinking how brutal it would be to get your mom handed to you in a grave while you were still grieving. I was always curious what it all meant but he was devastated that she died so i never asked any questions.
So it must be different with different practices with the different groups of muslims, my friend was an Ismaili muslim.