The Sarh d-Zihrun Raza Kasia (; "The Scroll of Zihrun, the Hidden Mystery") is a Mandaean religious text that describes rituals such as the masbuta, masiqta, and other related topics. It is an illustrated scroll.

Zihrun (referred to as Zihrun Raza Kasia or "Zihrun the Hidden Mystery" in full) is the name of an uthra.