﴿ وَلَقَدْ أَضَلَّ مِنكُمْ جِبِلًّۭا كَثِيرًا ۖ أَفَلَمْ تَكُونُوا۟ تَعْقِلُونَ ﴾

“And [as for Satan -] he had already led astray a great many of you: could you not, then, use your reason?”

Modern research has proved that a man’s skin is a form of record on which his utterances are recorded and from where they can also be reproduced. This is a sign which makes it understandable that in the Hereafter man’s entire being would bear witness to his deeds.