The Office for Tourism and Culture in Tigray (Mekelle, Ethiopia) preserves in its museum two fragments of Arabic stelae. These basalt stones belong to the corpus of Bilet, a Muslim cemetery in Tigray, from which 15 inscriptions have been already published and 21 stelae recently found in survey by the Franco-Ethiopian mission of Bilet. These two fragments are of unequal importance. The main one bears the oldest Arabic inscription from Ethiopia known to date.