Note 668 — Chapter VIII · COMMENCEMENT OF MONOTHEISM AND THE DIFFERENTIATION OF THE MYTHS.
R. (Russell) Martineau translation
al-Damîrî, Ḥayât al-ḥaywân, I. 59: ‘ʿAlî is the earliest Imâm whose burial-place is not known. It is said that before his death he ordered it to be kept secret, knowing that the sons of Umayya would attain to power, and that his grave would not then be safe from desecration. Nevertheless, his grave is shown at various places.’