What is the difference between "عليهم" (upon them), "فوقهم" (above them), and "عاليهم" (highest over them) in His Almighty's saying: "Highest over them will be garments of fine green silk"?

The word "ʿāleyhim" (عاليهم) is recited in the mutawatir (authentically transmitted) recitations with a fatḥa (vowel 'a') on the letter lâm, indicating its function as an adverb of place (ẓarfiyyah) or a circumstantial adverb (ḥāliyyah). It is also recited with a sukūn (vowel-less) on the lâm, in which case it functions as a predicate that precedes its subject (khabar muqaddam) or a subject (mubtadaʾ). Furthermore, it has been recited in the shādhdh (uncommon) readings as "ʿalayhim" (عليهم), functioning as a preposition, or "ʿallat hum" (علتهم), functioning as a past tense verb. In all these instances, its meaning is "above them" or "over them," whether it functions as an adverb of place, a circumstantial adverb, or a noun. The linguists and scholars of Qur'anic recitations have detailed these various aspects, clarifying the grammatical parsing (iʿrāb) and the meaning for each recitation.