The ruling on raising one foot during prostration

Question:
He says: Honorable Shaykh, may Allah grant you success, when some people perform prostration, they raise one of their feet over the other. Is this action permissible?

Answer:
No, it is not permissible. One does not raise any of the limbs of prostration until he raises his head. He raises his forehead and nose from the ground; at that point, he has moved out of prostration, because prostration is with the forehead and nose, and the other limbs follow them. They follow them. Therefore, if a person is unable to prostrate with his forehead, he is not told to prostrate on his hands and knees. If he is unable to prostrate with his forehead, he nods his head, and that is sufficient. The default for prostration is on the forehead, as a sign of humbling the face to Allah (Mighty and Majestic). If he raises his head from prostration, the prostration ends. There is no harm in him raising his leg, but as long as his forehead is on the ground, he is still in prostration and does not raise any of his limbs.