Jewish Encyclopedia: Galilee: "But it is for their faulty pronunciation that the Galileans are especially remembered: 'ayin and alef, and the gutturals generally, were confounded, no distinction being made between words like '"amar" (="ḥamor," uss), "ḥamar" (wine), "'amar" (a garment), "emar" (a lamb: 'Er. 53b); therefore Galileans were not permitted to act as readers of public prayers (Meg. 24b)."
