يَوْمَ يُنفَخُ فِي الصُّورِ ۚ وَنَحْشُرُ الْمُجْرِمِينَ يَوْمَئِذٍ زُرْقًا (102)
(20:102) On that Day, when the Trumpet will be blown *78 and We will muster the criminals while their eyes shall be dimmed (with terror), *79
*78) As regards the nature of the blowing of the "Trumpet" on the Day of Resurrection, it may be likened to the blowing of the bugle in the army to muster or disperse the soldiers. It is obvious that these words and terms have been used because these are known to the people. Therefore it wilt be wrong to consider the "Trumpet" to be exactly like the bugles and trumpets of this world.
*79) According to some Commentators, it means this: "The bodies of the criminals will turn white as if no drop of blood had been left in them."