The Library · Medieval tradition
A chapter of Book of Instruction in the Elements of the Art of Astrology by Al-Bīrūnī, 1029 CE.
Al-Bīrūnī's textbook covers mathematics, astronomy, and astrology in 530 questions — the scholarly Islamic-Golden-Age systematisation.
The full chapter text renders in the interactive Library reader, with the engine's cited rules linked to the passages they derive from.
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