Arahant monks, upon death, are either preserved/mummified or cremated. I haven't heard of any to be buried, although I would like to hear about any relevant accounts of that as well if there are some to discuss.
There are bodies of monks who have passed away on display in Thailand that have not decomposed. Many are said to be miraculously not decomposing, but is that the case with all of them or are some of them are acutally processed for preservation? Is it that an arahant has transcended certain natural phenomenon?
Then there is the matter of what remains after cremation. Oftentimes there are pellets and some other solid matter left behind which are then kept as relics. What exactly are these pellets, and how is what remains after the cremation of an arahant different from anyone else? When a non-arahant is cremated, is this matter not left behind? Is it only ashes and dust that remain? It has also been said that some bodies would not burn until certain conditions were met and things of that nature.
There is also a belief and practice regarding conjuring up relics. There are accounts of people praying for and receiving relics. Are these of the Buddha, Arahants, or whom? Also, what are they, bones?
Background information would be appreciated as well. Generally, what are the beliefs and practices behind relics? Specific examples, well-known or otherwise, would also be appreciated.