Q. If a person cannot make Sajdah on the ground, can he lead the Salaah if he sits on the ground?
A. It is a pre-requisite for a person to make Sajdah on the ground if he intends to lead a standing congregation whilst sitting on the ground and performing Salaah.
If he can merely sit on the ground and perform Salaah without being able to make Sajdah on the ground, he can only lead another person or congregation of the same circumstance. He cannot lead a standing congregation in Salaah. (Tahtaawi Ala Maraaqil Falaah 1/400/1)
Allah Ta’ala Knows Best
Mufti Ismaeel Bassa