This monastery, which was dedicated to a Persian saint, was founded in 370 according to some sources (Akyüz, Gabriyel. Mardin ili’nin merkezinde civar köylerinde ve ilçelerinde bulunan kiliselerin ve manastırların tarihi. Mardin Kırklar Kilisesi, 1998: 145), and in the 6ᵗh century according to others (Barṣawm, Afrām Ighnāṭyūs, and Matti Moosa. The History of Syriac Literature and Sciences. Pueblo: Passeggiata Press, 2000: 560). The site of Mor Abay monastery, known as Koros Mountain, is located in the close vicinity of the monasteries of Mor Theodute, Mor Shabay, and Mor Dimet. The historian Andrew Palmer defines Mor Abay as the mother of these two monasteries and emphasizes how that they are all geographically connected (Palmer, Andrew. ‘La Montagne Aux LXX Monastères. La Géographie Monastique Du Tur ’Abdin’. In Le Monachisme Syriaque, 169–259. Études Syriaques 7. Paris: Librairie orientaliste Paul Geuthner, 2010: 215).