Arabic numerals
The first mentions of the numerals in the West are found in the "Codex Vigilanus" of 976.
Classical Arabic
The A1 inscription dated to the 3rd or 4th c. AD in the Greek alphabet in a dialect showing affinities to that of the Safaitic inscriptions shows that short final high vowels had been lost in at least some dialects of Old Arabic at that time, obliterating the distinction between nominative and genitive case in the singular, leaving the accusative the only marked case: