What are the literary books (poetry or prose) that help a student of knowledge acquire a linguistic repertoire to aid him in oratory and delivery, and is it sufficient to choose a topic and write about it with innovative styles to attract the reader?

Indeed, eloquent expression is among the reasons people accept what you invite them to. To cultivate the tongue, it is recommended to read Arabic poetry and prose. Among the ancient poetry collections are: "Diwan Abi Tammam, Al-Mutanabbi, Al-Buhturi, Zuhayr, Al-Nabigha Al-Dhubyani, Tarafa ibn Al-Abd, and Hassan ibn Thabit." And among contemporary poets: "Diwan Ahmed Shawqi and Hafiz Ibrahim."

Among the books that collected the best of what Arab poets said are: "The Ten Mu'allaqat" (with Al-Zawzani's commentary), "Al-Mufaddaliyyat" by Al-Dabbi, and "Al-Asma'iyyat" by Al-Asma'i. And if you want a single book that gathers the best of what the Arabs wrote, then you should refer to "Al-Hamasah" by Abu Tammam, and the book "Al-Mukhtarat" by Mahmoud Sami Al-Baroudi, which is beneficial for orators and callers to Islam.

Among the most beneficial books of Arabic prose are: "Al-Amali" by Abu Ali Al-Qali, "Al-Kamil" by Al-Mubarrad, "Al-Bayan wa Al-Tabyin" by Al-Jahiz, and "Adab al-Katib" and "Uyun al-Akhbar" by Ibn Qutaybah.

Caution must be exercised when reading these books, as some litterateurs may write what contains Sharia or doctrinal violations (such as Al-Jahiz, the Mu'tazili); therefore, the reader must be well-versed in the creed of the Salaf.