Die philosophischen Abhandlungen des al-Kindi

which, according to Uṣaibiʿa, 1 is expanded to read:
Risala fi al-asma’ al-khamsa al-lahiqa li-kull al-maqulat Treatise on the five names pertaining to all the categories.

Casiri 2 and Hammer 3 relate it to the Aristotelian Organon. The former translates it as: "de quinque praedicamentis seu de Aristotelis Organo" on the five predicables or on the Organon of Aristotle. The latter adds the words "that is the Organon of Aristotle" to the title. They do not, however, give a reason for this. They likely make the addition merely because of the maqulat categories = kategoriai categories, which recall the Aristotelian book of the same name. Flügel 4 relates it to the "quinque uoces" five voices of Porphyry. This is, however, obviously incorrect, because the headings: 5
Risala fi al-maqulat al-‘ashr Treatise on the ten categories and 6
Ikhtisar kitab Isaghuji li-Furfuriyus Summary of the book of the Eisagoge by Porphyry point to two separate treatises on those topics. One can hardly think of duplicates, for these are usually located either very close to one another or at a certain distance. In our case, however, they are entered as numbers 25, 29, and 32 respectively.

The word asma’ names (plural of ism name), which Uṣaibi'a uses—perhaps to distinguish the treatise from the above more sharply—instead of aswat sounds/words—unless...

1) Uṣaibiʿa no. 31.
2) Casiri, p. 353 col. 2.
3) Hammer, p. 243.
4) Flügel, p. 22 no. 32: "Treatise on the five words or categoremes (predicables)" — and in note 48: i.e., 1. peri genous on genus, 2. peri eidous on species, 3. peri diaphoras on difference, 4. peri idiou on property, 5. peri symbebekotos on accident. Cf. Porphyry's Eisagoge [on the Categories of Aristotle] peri ton pente phonon (on the five voices or introduction to the categories of Aristotle), i.e., the Porphyrian predicables or the five names attached to each of the ten categories.
5) Sulle opere etc. p. 9. no. 29 (Fihrist no. 25, Qifṭī no. 19, Uṣaibiʿa no. 27, Flügel no. 28, Hammer no. 26).
6) Sulle opere etc. p. 8 no. 25 (Uṣaibiʿa no. 23, Flügel no. 25, Hammer no. 23).