The book Ekhtiārāt-e She‘ri by Abolhassan Najafi is a scholarly and educational work on the language, meter, and structure of Persian poetry, examining the poet’s liberties in relation to prosodic rules. In this book, the poet, as the central figure, navigates between adherence to rules and the use of linguistic freedoms for artistic creation, while the author provides a precise and analytical exploration of the boundary between convention and creativity in Persian poetry.