What is the ruling on working in a laboratory that analyzes samples taken from the deceased (such as nails, hair, body fluids, or parts of internal organs) to ascertain the cause of death, bearing in mind the Hadith: "The sanctity of a Muslim in death is like his sanctity in life"?

The fundamental principle is to respect the Muslim's body, whether alive or dead. Breaking the bone of a deceased person is like breaking it while they are alive. However, necessities arise that necessitate exceptions, such as:

1. Forensic dissection to determine the cause of death. 2. Autopsy to ascertain the cause of non-criminal death, especially in cases of epidemic diseases. 3. Dissection of a cadaver for the training of medical students. This should preferably be done on the bodies of non-Muslims and those with whom a covenant has been made, such as combatants and apostates.

This opinion is the one relied upon by scholars and jurisprudential councils. Some scholars, however, deem the dissection of a disbeliever's body unlawful without the permission of their family.