Prayer: Items on Which to Perform the Obligatory Sajdah of the Quran
Practical Laws of Islam as per the teachings of Ayatullah Sistani
Ruling 1084
The obligatory precaution is that for an obligatory sajdah of the Qur’an, one must place his forehead on a turbah or something else on which it is permitted to perform sajdah. And based on recommended precaution, one should place the other parts of his body on the ground according to the instructions that were mentioned with regard to performing sajdah in prayers.