Given our objective of analysing the formal aspects of the dîwân by Jamîl Buṯayna (Arabic poet and hero of the Romance of Jamîl and Buṯayna, who died in or around 701 AD), we began by establishing an entirely vocalized and metrically coherent edition of this work from four previously published editions. A complete syllabic analysis of this edition of the diwân was then undertaken using the Xalîl software elaborated by Djamel Eddine Kouloughli as well as a frequency of occurrence lexicon. In the second volume we used the syllabic analysis as the basis for an analysis of the metrics. The main result of this analysis consisted in revealing a systematization of the respect or the zones of stability which had been subject to variation in ancient Arabic poetry. The other aspect of the analysis consisted in the extraction of the formulas of the dîwân; we employed an original method which we baptized: metrically guided prospection. This method not only enabled the detection of a large number of formulas in use until the 13th century (the end of the period under analysis), but also revealed the existence of numerous verses or fragments of poems which are also to be found in the diwân of Jamîl Buṯayna, Majnûn Laylâ, Kuṯayyir Azza and Nuṣayb b. Rabâḥ, in particular. These verses and fragments constitute a common, shared resource which was undoubtedly available to all at that time thus invalidating any reference to plagiarism and anteriority.
