It is said that Ali (a.s) asked his friends and family to bury him secretly. His burial was revealed only later during the Abbasid caliphate by Imam Ja'far al-Sadiq (a.s), his descendant and the sixth Shia Imam.
- Why did he order to be buried in secret?
Ref:
Al-Shaykh Al-Mufid (1986). Kitab Al-Irshad: The Book of Guidance into the Lives of the Twelve Imams. Routledge Kegan & Paul. ISBN 978-0-7103-0151-2.Al-Shaykh Al-Mufid (1986). Kitab Al-Irshad: The Book of Guidance into the Lives of the Twelve Imams. Routledge Kegan & Paul. ISBN 978-0-7103-0151-2.