Misbâh ul-arvâh, or The Lantern of Spirits, is a comparatively little known Sufi didactic Persian poem written in the 12th century by the next to unknown Shaikh Shams ud-dîn Muhammad b. Îl-Tughân Bardasîrî Kirmânî. It is not a very long poem, covering only 1099 double verses (bait), but it contains both a quite comprehensive compendium of Sufi teachings and a very interesting description of the soul's journey to the Other World. The latter furnishes fascinating parallels with Dante's Divina Commedia. The book gives a detailed description of the contents of the poem, with many examples of it's eloquent verse in translation. The main part of the book, however, gives a critical edition of the Persian text, based on the twelve oldest known manuscripts that contain the poem, the eight oldest of which are dated, making a detailed reconstruction of the original text possible.

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Bo Utas is Professor Emeritus of Iranian Studies at Uppsala University, Sweden. He got his PhD in Iranian languages from Uppsala University in 1973. In 1981-87 he had a special research position with the Swedish Research council, and in 1988 he was appointed the first professor of Iranian studies in Sweden. His research covers many aspects of Middle and New Iranian languages, especially varieties of Persian, and literary, religious and historical topics connected with the use of those languages. He is a specialist in Persian manuscripts, Sufi texts and Persian metrics. Publications range from his dissertation Tarîq ut-tahqîq. A critical edition, with a history of the text and commentary of 1973 to a collection volume entitled Evidentials. Turkic, Iranian and neighbouring languages (edited together with Lars Johanson) in 2000, and recently the book The virgin and her lover. Fragments of an Ancient Greek Novel and a Persian Epic Poem (= Brill Studies in Middle Eastern Literatures, 30, Leiden 2003; together with Tomas Hägg). Recently his papers on Persian literature were reprinted in a volume entitled: Manuscript, Text and Literature. Collected Essays on Middle and New Persian Texts (= Beiträge zur Iranistik, 29, Wiesbaden 2008), and his linguistic papers in: From Old to New Persian (= Beiträge zur Iranistik, 38, Wiesbaden 2013).