al-Kindi
Notes
Abu Yusuf Ya'qub ibn Ishaq al-Kindi (c. 801–873), "the philosopher of the Arabs", the first of the Islamic Peripatetic philosophers. Argued in On First Philosophy that the universe cannot be infinitely old and must therefore have a beginning and a creator, an early form of the Kalam Cosmological Argument.
Wikipedia: https://en.wikipedia.org/wiki/Al-Kindi