From a book about the 11th century Arabic literary critic, grammarian, and theologian from Persia, `Abd al-Qāhir al-Jurjānī —
"This in fact also explains the significant absence from al-Jurjānī’s own work of any reference to the representational aspect of all forms of image-making (taṣwīr), and his constant discussion of its constructional aspect. Simultaneously, this reveals also the reasons underlying al-Jurjānī’s comparison of construction (naẓm) to artistic creation, and the all-important fact that the concept of proportional presentation concomitant with representational art is unfamiliar to him. The concept of artistic superiority which dominates his work is that of “the wholeness of effect”, “the harmony of construction”, “the balance of structure”, regardless of any proportional presentation. Both concepts are fundamental features of Islamic art as a whole and they perhaps explain its abstractness and its purity at the same time.”
and he adds in the footnote: "It is perhaps with these features in mind that one may give credence to the suggestion that Arabic art in Spain influenced the abstract art of Picasso"