The Library · Medieval tradition
A chapter of The Great Introduction to Astrology by Abū Maʿshar al-Balkhī, c. 850 CE.
The most influential astrological work of the Middle Ages. Synthesises Indian, Persian, and Greek doctrine — the bridge from Antiquity to Latin scholasticism.
The full chapter text renders in the interactive Library reader, with the engine's cited rules linked to the passages they derive from.
The whole book · The rule book · The Library