In Surah An-Nisa (4:56), the Quran declares about those who will suffer the punishment of fire: "Every time their skins are roasted through, We will replace them with other skins so they may taste the punishment."
This verse establishes a direct link between the skin and the sensation of pain. Modern science has confirmed that pain receptors are indeed located in the skin.
The historical context
In the 7th century, the understanding of pain sensation was very limited. It was generally believed that pain was felt throughout the body, without precise localization. The specific link between the skin and pain perception was not known.
The scientific confirmation
Modern science has discovered that the sensation of pain is mediated by specialized receptors called nociceptors, located mainly in the skin. These receptors are free nerve endings that detect harmful stimuli (excessive heat, pressure, chemicals) and transmit pain signals to the brain.
Key discoveries:
- Cutaneous nociceptors: Pain receptors are abundant in the skin (epidermis and dermis). They are absent from deep internal organs, which explains why skin burns are so painful.
- Destruction of receptors: When the skin is completely burned (third-degree burn), the nociceptors are destroyed and the sensation of pain disappears in the burned area. This is why the Quran mentions that new skins are given so that pain is felt again.
- Pain physiology: Physiologist Charles Sherrington described nociceptors in the early 20th century, and their role in pain perception was fully elucidated later.
The Quranic verse describes with remarkable precision the fact that the sensation of pain depends on the skin: if the skin is destroyed, pain ceases, and new skin is needed for pain to be felt again. This physiological understanding was only established by science in the 19th and 20th centuries.
The scientific significance
Verse 4:56 demonstrates precise knowledge of pain physiology that could not have been known in the 7th century. The location of pain receptors in the skin and their destruction by deep burns are modern scientific discoveries that confirm the Quranic statement.