المدخل الكبير إلى علم النجوم

"Al-Mudkhal al-Kabir ila Ilm al-Nujum" (The Great Introduction to the Science of the Stars), a book on astrology by Abu Ma'shar. In it he describes how each planet appears in different forms when it rises. ¹

Al-Mas'udi cites it in the chapter on the ghoul and what appears in the deserts when the stars rise. ¹