It is narrated from Abbas (may Allah be pleased with him), son of Abdul Muttalib, that he heard the Prophet (ﷺ) saying: "When a servant prostrates, seven parts of his body prostrate along with him: his face, his hands, his knees, and his two feet."
Hadith Referenceمسند الإمام الشافعي / كتاب الصلاة / 241
Hadith Takhrijاسنادہ ضعیف والحدیث صحیح صحيح من غير هذا الطريق اخرجه مسلم، الصلاة، باب أعضاء السجود والنهي عن كف الشعر والثوب...... الخ: 491۔