The lexical units connected with religion in Uzbek are borrowed from Arabic. In the process of assimilation, phonemes that do not exist in the Uzbek language are replaced by similar alternatives, and this is the norm for the speakers of the Uzbek language. However, in the speeches of religious preachers, we see that Arabic phonemes are pronounced in accordance with the rules of the Arabic language, not Uzbek alternatives. This is a feature peculiar only to the religious texts.