One’s Forehead Should Be on Earth or Those Things Which Grow from Earth
Issue No.965- When performing sajdah, one’s forehead should be on earth or those things which grow from earth, e.g., wood and leaves of trees. However, sajdah on edibles or clothes, though they may grow from earth, is not permissible. Similarly, sajdah on metals such as gold and silver is invalid, but sajdah on mineral stones such as marbles, white and black stones and even on agate is correct.
