A year later, he was employed by the Ministry of Education to compile and publish a Persian dictionary. The project, however, did not receive funding and never materialized (Eḥtešāmi, p. 37). Subsequently Masrur was appointed to a number of clerical and instructional positions in the Ministry of Education and for more than 36 years taught Persian literature and history at Dār-al-Fonun, the Teachers Training College (Dāneš-sarā-ye ʿāli), and the Military College (Dāneškada-ye afsari). Many of his students went on to become distinguished figures in the fields of science, literature and politics (Dorudiān, p. 182). His circle of friends in Tehran included such eminent scholars as Moḥammad Taqi Bahār, Aḥmad Kasravi, Ḡolām-Reżā Rašid Yāsemi (1894-1951), Mojtabā Minovi (1903-1976) and Saʿid Nafisi (1895-1966), among others. In 1923 he joined the Iran Literary Circle (Anjoman-e Adabi-e Irān), a leading advocate of Persian classical literature in the Reżā Shah Pahlavi era (r. 1925-1941), and was appointed to its directorial board in 1924.