These readings represent linguistic options, as the second is a lightened form of the first. *Another narration from Abū ʿAmr has an overshort 'u' vowel. Some pronounced the word without hamzah, i.e. tāmur(u)hum.
He has revealed to you ˹O Prophet˺ the Book in truth, confirming what came before it, as He revealed the Torah and the Gospel
Explication
These readings represent linguistic options, as the second is a lightened form of the first. *Another narration from Abū ʿAmr has an overshort 'u' vowel. Some pronounced the word without hamzah, i.e. tāmur(u)hum.