A SABEAN MANDEAN PSYCHOPOMPIC RITUAL is described in an AFP article in the Peninsula (Qatar):

Sabean-Mandeans trying to preserve their traditions
Web posted at: 3/23/2005 3:9:4
Source ::: AFP

BAGHDAD: �I cannot speak because I am dead,� scribbles Salem Daoud on a piece of paper as he stands on the banks of the Tigris.

The 55-year-old priest looks like the biblical Moses with his thick white beard, rosy cheeks and white tunics. His headgear resembles that of a Jewish Rabbi.

He is impersonating one of 100 members of his tiny Sabean-Mandean community who died in violent incidents in Iraq over the past few months, during the US-led invasion two years ago or in the wars of ousted leader Saddam Hussein.

According to the ancient religion, which combines Babylonian, pre-Islamic, Persian and Christian beliefs, those who die of unnatural causes must have their last baptism and be honoured with a feast, otherwise their spirits would remain stuck on earth and never make it up to the �world of light.�

Tuesday is the climax of the �five white days,� one of the holiest periods in the Mandean-Sabean calendar.

[...]

Other rites are described as well.