Shabbar, Syed Muhammad Raza (2025). "The Eighth Imam, 'Ali Ibn Musa, Al-Ridha' (as)". Story of the Holy Ka’aba And its People. al-Islam.org: Ahlul Bayt Digital Islamic Library Project. Retrieved 13 June 2025. … they placed him in a grave inside the tomb of Harun al- Rashid.