What are the prerequisites for the validity of the prayer (Salat)?
Chapter on what invalidates the prayer if omitted intentionally or forgetfully
Al-Mughni
Book of Prayer
Primary text
Six conditions are required for the prayer to be valid: purification from ritual impurity (Hadath), purification from tangible filth (Najasah), providing a Sutrah (barrier), facing the Qiblah, the entry of the prescribed time, and the intention (Niyyah). If any of these conditions are omitted without a valid excuse, the prayer is not established.