WITNESS

Maqālah fī ṣifat al-ashkāl allatī taḥduthu bi-mamarr ṭaraf ẓill al-miqyās fī saṭḥ al-ufq fī kull yawm wa-fī kull balad_San Lorenzo de El Escorial_El Escorial Monastery Library of San Lorenzo_árabe_II 960

References

Derenbourg, Hartwig, and H.P.J. Rénaud. 1941. Les Manuscrits Arabes De L’escurial, Vol 2, Fasc. 3, Sciences Exactes Et Sciences Occultées. 3 vol.. Paris: P. Geuthner.

P. 96.