Placing the Forehead on the Ground

9. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from al-Husayn ibn Sa‘id from Fadalah from Aban from ‘Abd al- Rahman ibn abu ‘Abd Allah who has said the following: “I once asked abu ‘Abd Allah عليه السلام, about a man who performs Sajdah (prostration) wearing a turban which prevents his face from falling on the earth. He (the Imam) said, ‘No, it is not sufficient until his forehead touches the earth.’”