As Mr. Beveridge has referred to my criticism (which is in reality not mine, but Professor A. Müller's, cited by Professor Houtsma in a footnote on pp. xiv–xv of his edition of al-Bundāri's History of the Seljūqs) on the now familiar story of ‘Umar's covenant with the Nidhāmu'l-Mulk and Ḥasan-i-Ṣabbāḥ, I should be glad to have an opportunity of stating that my recent reading has shown me that this tale at least reposes on more ancient and respectable authority than either the Rawḍatu-ṣ-Ṣafā or the Tārīkh-i-Alfī, namely, on that of the Jāmi'u't-Tawārīkh of Rashīdu'd-Dīn, who was put to death in a.h. 718. The passage, cited from f. 292b of the British Museum MS., Add. 7,628, runs as follows:—