Prayer: Do Followers’ Prayers Become Invalid if the Imam Stands at a Higher Elevation?

Practical Laws of Islam as per the teachings of Imam Khamenei

Prayer: Do Followers’ Prayers Become Invalid if the Imam Stands at a Higher Elevation?

English:

Question #574:

Do the prayers of the followers become void when the imam is at a higher position than them?

Answer #574:

If the place where the imam is standing is too higher than that of the congregants to be permissible in Islamic law (i.e. by one span or more), this would invalidate the congregational prayer.

-Imam Khamenei, Practical Laws of Islam, Importance and Conditions of Prayer