Qutaybah ibn Sa'id narrated to us, Bakr—who is Ibn Mudar—narrated to us, from Ibn al-Had, from Muhammad ibn Ibrahim, from 'Amir ibn Sa'd, from al-'Abbas ibn 'Abd al-Muttalib, that he heard the Messenger of Allah, peace and blessings be upon him, say: "When the servant prostrates, seven parts prostrate with him: his face, his two palms, his two knees, and his two feet."