According to search-discovered classical Islamic scholarship, the concept of 'chains' in the Quran, primarily denoted by the Arabic term 'Aghlal' (أَغْلَال), carries a profound dual meaning. It refers to the literal iron chains, shackles, or collars that will be a severe punishment for the disbelievers in Hellfire, as vividly described in verses like Surah Ar-Ra'd 13:5 and Surah Ghafir 40:71. Tafsir Ibn Kathir confirms that these are a real torment for those who denied their Lord. Simultaneously, as highlighted by scholars like Syed Abul A'la Maududi, these chains are a powerful metaphor for the spiritual state of those who reject faith in this life. Their arrogance and refusal to submit to the truth act as self-imposed shackles around their necks, blinding them to guidance (as in Surah Ya-Sin 36:8). This synthesis, integrating linguistic analysis from scholars like Al-Tabari and the spiritual insights of others, reveals a direct link: the metaphorical chains of disbelief on earth become the literal chains of punishment in the Hereafter, underscoring the gravity of divine justice.