Muslim burial is fast, plain and specific about position, and each of those features is argued for.
Speed: burial the same day where it is possible, on the reasoning that hastening the righteous to their reward is a kindness and delaying is not. Autopsy and legal process are accommodated where the law requires them, and jurists have written at length about how much delay is acceptable and why.
Preparation: the body is washed, usually three times or more, by people of the same sex, and wrapped in a shroud of undyed cloth, three sheets for a man and five for a woman in the most widespread practice. A man who dies in the state of pilgrim consecration is buried in the garments he was already wearing. The martyr is not washed at all, and is buried in the clothes he died in, blood included, which is a striking exception and is meant to be.
The prayer: salat al-janazah is said standing throughout, with no bowing and no prostration. It is a communal obligation, which means that if enough of the community performs it the obligation is discharged for all, and if none does, all are at fault.
The grave: the body is laid on its right side with the face turned toward Mecca, the same direction faced in prayer, so that the orientation of a Muslim life is preserved after it. In many countries the body is placed directly in the earth without a coffin, with a niche cut into the side of the grave or slabs laid over the body to keep the soil off it. Where local law requires a coffin, one is used, and this has been a recurring point of negotiation for Muslim communities in Europe and North America along with the requirement for same-day burial and the objection to embalming. Several jurisdictions grant exemptions.
Graves are traditionally kept low and unmarked or nearly so. Elaborate tombs are discouraged in the sources and are nonetheless common, which is one of the many places where legal opinion and popular practice have coexisted without either giving way.