The verse (7:8) establishes the absolute justice of divine judgment on the Day of Resurrection, emphasizing that the "weighing" (al-wazn) of deeds will be undeniably "true" (al-haqq). This process ensures no injustice, even to the weight of a mustard seed, as highlighted by other Quranic verses (21:47, 4:40).

Ibn Kathir explains that "weighing" refers to the assessment of human actions. The scales (mawāzīn) are literal, and deeds, though immaterial, will be given physical weight by Allah. This is supported by narrations where actions (like good deeds or the Quran) manifest as tangible forms. There are differing scholarly views, all considered valid, on *what* is weighed: the deeds themselves, the scrolls recording them, or even the person performing the deeds, as exemplified by the Hadith concerning a fat man weighing nothing before Allah versus Abdullah ibn Mas'ud's thin legs weighing more than Mount Uhud. The overarching principle is that those whose good deeds outweigh their bad (heavy scales) will be successful (al-muflihūn), attaining paradise, while those with light scales will face perdition (101:6-11, 23:101-103). This underscores divine justice and accountability, motivating believers towards righteous conduct.

📚 Sources: Classical tafsir (multi-source)