Profection (Arabic)
Definition
This is the Arabic-Persian and medieval Latin form of profection — a symbolic timing technique inherited from Hellenistic astrology. The idea is simple: the birth Ascendant (and other key points) moves forward one whole sign each year of life, so age zero activates the 1st sign, age one the 2nd, and the cycle returns to the birth sign every twelve years. Persian and Arabic translators of Dorotheus called it the "transfer of years," and the planet that rules the activated sign becomes the Lord of the Year (sahib al-sana) — the main "timekeeper" for that twelve-month stretch.
In Tradition
In Arabic-Persian and medieval Latin practice, astrologers read profection alongside the firdaria, transits, and primary directions so that each year gets a clear topical focus. The Lord of the Year — the sign-ruler of the activated sign — sets the year's prevailing planetary signature. Bonatti and Sahl give priority to that planet's strength in the birth chart, its sect standing, and its current transits, with the firdaria major-lord supplying the longer-term background and the activated sign narrowing the year's themes.
In Practice
You count one sign per year of life from the birth Ascendant to find this year's activated sign, then identify its ruler as Lord of the Year. That planet's condition at birth — its sign, its dignity (essential strength), its sect, its aspects, whether it is free of combustion, whether it sits on an angle — sets the year's baseline quality. Transits to the Lord of the Year, especially a station, a return, or an ingress, are watched as the year's triggers, and the activated sign's topic (1st sign = the body, 7th = partner, 10th = career, and so on) supplies the year's theme. Some Arabic and medieval Latin authors use a smooth 30-degrees-per-year version rather than the Hellenistic whole-sign step, and Bonatti separates annual, monthly, and daily profections of the Ascendant, Sun, Moon, and lots. The Lord of the Year is then weighed together with the active firdaria major and sub-lord for fine-grained yearly prediction.
Historical Origin
The technique appears in the foundational Hellenistic sources — Dorotheus, Ptolemy, Valens — and passed through Persian and Arabic intermediaries (Umar al-Tabari, Sahl, Masha'allah, Abu Ma'shar) as the "transfer of years." It is preserved in Bonatti's Liber Astronomiae (13th c.) and entered the Latin medieval tradition through that channel; Holden documents the unbroken transmission across Greek, Persian, Arabic, and Latin sources.
Further Reading
- Guido Bonatti, Liber Astronomiae
- Abu Ma'shar, The Great Introduction to Astrology
- Dorotheus of Sidon, Carmen Astrologicum