Works of Sahl and Masha'allah
Source textWorks of Sahl and Masha'allah
Bibliographic
AuthorsMasha'allah, Sahl ibn Bishr, Sahl ibn Bishr and Masha'allah
TranslatorsBenjamin Dykes, Benjamin N. Dykes
TraditionMedieval Arabic/Persian
PeriodMedieval Arabic Persian
Composition825 · Approximate early ninth-century CE composition period.
Publication2008 · Dykes translation edition.
ISBNNot listed
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Citations3
Interpretive rules3
Technique areas2
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Interpretive rules
A slower collector receives two applying lights and gathers them into one perfected relation under the medieval collection doctrine.
A third party perfects first and blocks the intended matter, preserving Sahl's broader prohibition family and its cutting-off subtype.
A faster intermediary body separates from one significator and applies to another, carrying the light onward in the medieval transfer-of-light doctrine.