As I can't find a single word of explanation comming from Madina, I will show the different ways of writing /fādāraʾtum/:
both Ḥafez Osmān the Elder (right, top) and the Moroccans (in the middle of the left I show the oldest Fès-print 1296/1879) write an alif: for Asians it is hamza (the sukūn above says: I am not mute, do pronounce my consonantal value /ʾ/!); for the Africans it carries hamza represented by a red point.
In the right the second (Muṣṭafà Naẓīf Qadarġalī) and the third (al-Muḫallalātī) have hovering hamza sign (without seat, but not on the base line)
The KFE (second on the left) puts the hamza sign on the baseline. Hence ʿUṯmān Ṭaha does the same (fourth on the right).
Unlike the Indians (left, third from the bottom) who have a seatless hamza sign like the KFE, both Tunis (second from the bottom) and Tripoli (left, last) have in their Qālūn maṣāḥif a hamza sign on an dagger-alif,
exactely what the KFC did in changing UT0 into UT1.
