حَدَّثَنَا مُحَمَّدُ بْنُ حَاتِمٍ، حَدَّثَنَا بَهْزٌ، حَدَّثَنَا وُهَيْبٌ، حَدَّثَنَا عَبْدُ اللَّهِ بْنُ طَاوُسٍ، عَنْ طَاوُسٍ، عَنِ ابْنِ عَبَّاسٍ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ ‏"‏ أُمِرْتُ أَنْ أَسْجُدَ عَلَى سَبْعَةِ أَعْظُمٍ الْجَبْهَةِ - وَأَشَارَ بِيَدِهِ عَلَى أَنْفِهِ - وَالْيَدَيْنِ وَالرِّجْلَيْنِ وَأَطْرَافِ الْقَدَمَيْنِ وَلاَ نَكْفِتَ الثِّيَابَ وَلاَ الشَّعْرَ ‏"‏ ‏.‏

Ibn Abbas reported that the Messenger of Allah (PBUH) said: I have been commanded to prostrate myself on seven bones:" forehead," and then pointed with his hand towards his nose, hands, feet, and the extremities of the feet; and we were forbidden to fold back clothing and hair. Translation Not Available

Book Ref: Sahih Muslim Book 4 Hadith 994
Web Ref:  Sahih Muslim Book 4 Hadith 490 d