According to search-discovered classical Islamic scholarship, the principle of Rewards and Punishments, known in Arabic as *Al-Thawab wa al-'Iqab*, is a cornerstone of divine justice and human accountability in Islam. The Arabic root of *Thawab* signifies a 'return' to wholeness, indicating that reward is a restoration of one's pure nature (*fitrah*), not merely a transaction. Conversely, *'Iqab* derives from a root meaning 'to follow,' denoting a consequence that follows a transgression. Ibn Kathir and other classical exegetes explain this framework as proof of human free will; without it, recompense would be meaningless. The Quran affirms this balance in verses like 33:30-31, where the Prophet's wives are promised doubled rewards for righteousness and warned of doubled punishment for wrongdoing, establishing that greater responsibility incurs greater consequences. This divine system is not purely mechanical; it is enveloped in Allah's mercy (*Rahmah*), where rewards are often multiplied, while punishment is strictly proportionate to the sin. Ultimately, this concept serves as a profound educational tool to motivate believers, fostering a balance of hope (*Raja*) in Allah's reward and fear (*Khawf*) of His just punishment.