The Messenger of Allah ﷺ said: "I have been commanded to prostrate on seven, and not to tuck up my hair nor my garment: the forehead, the nose, the hands, the knees and the feet."  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ أُمِرْتُ أَنْ أَسْجُدَ عَلَى سَبْعَةٍ لاَ أَكُفَّ الشَّعْرَ وَلاَ الثِّيَابَ الْجَبْهَةِ وَالأَنْفِ وَالْيَدَيْنِ وَالرُّكْبَتَيْنِ وَالْقَدَمَيْنِ