Note 121 — Chapter X · CAMPAIGN OF KHALID IN IRAC. A.H. XII. A.D. 633.
Reading edition
The palace of Khawarnac was built 200 years before, by Nomân I., for the reception of his pupil Bahrâm Gour, heir-apparent to the throne of Persia. Sinnimâr was the architect. There was a stone, so the story runs, which, if removed, the whole building would fall. The secret was known to Sinnimâr alone; and Nomân dashed him from the top, that the secret might perish with him. (Life of Mahomet, vol. i. p. clxxi.)