I was working with Mohamed from Yalla Araby during my PhD research program. I had to read two old XVI century Arabic manuscripts and I needed some assistance in doing so, which was really helpful. During our meetings, he helped me to read the manuscripts, to retrace the meaning of words and sentences explaining me all difficult passages we found both, in prose and poetry. I learned a lot from his wide knowledge of Arabic language both ancient and modern. During the classes, he was really patient, serious, professional and always very nice. I really recommend Mohamed and Yalla Araby for all levels of Arabic from elementary to advanced.