some of the manuscripts of the Fihrist as Baktiyar Nameh instead of
_bakhuday Nameh_; see Rosen's essay on the Translations of the Khuday
Nameh, 177.]

[Footnote 3: West; Sacred Books of the East Vol. V. page 241, note 1,
and Sacred Books of the East Vol. III, 169. [The first authority is not
quite clear to me. The second authority is evident: "writing which the
glorified Roshna, son of Atur-frobag, prepared--for which he appointed
the name of the _Roshan Nipik_." Tr.] _Re_ the name of Rushen see Justi
_Namenbuch_ 262 under the word Rozanis.]

* * * * *

Books of this title in Pahlavi literature related to a variety of
religious problems and treated of ethicodidactic themes. The same title,
further, we find in the Middle Persian literature. This is the title of
the wellknown book of Nasir-i-Khusrao, namely, _Rushnai Nameh_, a
considerable portion of which manifests Shia and Sufistic influences and
which by its nature must have been connected with ethico-didactic
literature.[1] It is quite possible that Ar Rayhani interested himself
in Persian of ethics and morality literature and in Persian _Adab_ and
gave his book the name of the 'Book Light' which treated of questions of
this nature. This book formed, as no doubt its author did, the uniting
link between the didactic Parsi clerical writings and the ethical
literature of Islam.

[Footnote 1: GIPh Vol. II, 280.]

Now reading as Rushana Nibik the title of the book of Ar Rayhani
occurring in the Fihrist, we establish a historical fact in literature.