According to search-discovered classical Islamic scholarship, the concept of 'Sima' (Mark) is a profound Quranic principle where one's inner spiritual reality is manifested as an external, recognizable sign. Ibn Kathir, in his tafsir of Surah Muhammad (47:30), explains that the 'mark' of the hypocrites was not a physical brand but was discernible in their manner of speech and expressions. In contrast, Al-Qurtubi's analysis of Surah Ar-Rahman (55:41) describes the 'mark' of the criminals on the Day of Judgment as a stark, physical sign, such as darkened faces, making their sinfulness undeniable. The linguistic root (س-و-م) signifies distinction and branding. This dual application reveals a consistent divine law: inner states, whether of hypocrisy, sin, or piety, will ultimately be made manifest.