Surah 74. Al-Muddaththir, Ayah 26

This is unquestionably the earliest instance of the term saqar ("hell-fire"), one of the seven metaphorical names given in the Qur'an to the concept of the suffering in the hereafter which man brings upon himself by sinning and deliberately remaining blind and deaf, in this world, to spiritual truths (cf. surah {15}, note [33]). The allegorical character of this and all other Qur'anic descriptions of man's condition and destiny in the hereafter is clearly alluded to in the subsequent verse as well as in verse {28} ff.

The Sinner's perversity can only end in the Fire of Punishment. It enters his very being. See next note.