The scholars, may God be pleased with them, agreed that whoever prostrates on the face, hands, knees, and tips of the feet, his prostration has been completed. They disagreed that if he prostrated on his face and one of those organs was missing, is his prayer invalid or not? Some say it is invalid and someone says it is not invalid, and they did not differ regarding whoever prostrates on his forehead. And his nose, then he prostrated on his face. They differed as to whoever prostrated on his forehead, not his nose, or on his nose, not on his forehead. Some say that whoever prostrates on his forehead, not his nose, is permissible, but if he prostrates on his nose, not his forehead, it is not permissible. And whoever says that it is permissible to prostrate on his nose, not his forehead, and on his forehead, without his nose. He said that it is only permissible to prostrate on both of them together.