Sahl ibn Bishr and Masha'allah. Works of Sahl and Masha'allah, trans. Benjamin N. Dykes (2008), 55.
Sahl ibn Bishr and Masha'allah. Works of Sahl and Masha'allah, trans. Benjamin N. Dykes (2008), 66.
Sahl ibn Bishr and Masha'allah. Works of Sahl and Masha'allah, trans. Benjamin N. Dykes (2008), 76.
Interpretive rules
Rules appear here when they cite this source text.
Medieval · general
Medieval collection of light
A slower collector receives two applying lights and gathers them into one perfected relation under the medieval collection doctrine.
Medieval · general
Medieval prohibition of light
A third party perfects first and blocks the intended matter, preserving Sahl's broader prohibition family and its cutting-off subtype.
Medieval · general
Medieval translation of light
A faster intermediary body separates from one significator and applies to another, carrying the light onward in the medieval transfer-of-light doctrine.