Has power over the great lords; teaches all that passes in the republics and among the allies.
Reschin
In the De Secretis manuscripts (Clavicula Salomonis de secretis, 17th c. — Dresden N.91, Rps 3352 II, Venice b.93) as «Reschin», with its power and its drawn character. This is the stratum preceding the printed Verum.
«Reschin in Scientias, quas hominibus infundere, et auferre potest, Item ad omnia, quae in Regnis, et rebus geruntur scienda est accomodatus; quippe, qui omnia interroganti declaret, quonam modo id fieri exponulet.»
De Secretis · SLUB Dresden, Mscr.Dresd.N.91 · p.20 (ms.12)

This same character is also drawn (in red and green ink) in L'Art Magique (Wellcome MS.983, ~1709), the French witness closest to the printed Verum — public domain.

The printed Grimorium Verum (Plaingière ed., 18th c.) names Musisin among the eighteen spirits under Duke Syrach and sets out its office. Read it with the facsimile in our edition.
Offices transcribed by us from L'Art Magique (Wellcome MS.983, ca. 1709, public domain) and collated with the 17th-c. De Secretis manuscripts. Historical, educational material.
grimorium.lat · Grimorium Verum