Narrated by:Ibn 'Abbas that
It was narrated from Ibn 'Abbas that:The Prophet (ﷺ) said: "I have been commanded to prostrate on seven bones: on the forehead"- and he pointed with his hand- "on the nose, the hands, the knees and the ends of the feet."
أَخْبَرَنَا عَمْرُو بْنُ مَنْصُورٍ النَّسَائِيُّ، قَالَ حَدَّثَنَا الْمُعَلَّى بْنُ أَسَدٍ، قَالَ حَدَّثَنَا وُهَيْبٌ، عَنْ عَبْدِ اللَّهِ بْنِ طَاوُسٍ، عَنْ أَبِيهِ، عَنِ ابْنِ عَبَّاسٍ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " أُمِرْتُ أَنْ أَسْجُدَ عَلَى سَبْعَةِ أَعْظُمٍ عَلَى الْجَبْهَةِ وَأَشَارَ بِيَدِهِ عَلَى الأَنْفِ وَالْيَدَيْنِ وَالرُّكْبَتَيْنِ وَأَطْرَافِ الْقَدَمَيْنِ " .
Nesai
The Book of The At-Tatbiq (Clasping One's Hands Together) • Hadith 1097