Prostrating on seven parts

Prostration is on the forehead and nose, both hands, both knees and both feet.

Narrated by Abdullah ibn Abbas

I have been commanded to prostrate on seven bones: the forehead, and he pointed to his nose, the two hands, the two knees and the ends of the two feet.

Sahih al-Bukhari 812, Sahih Muslim 490

What this hadith teaches

All seven parts should touch the ground in every prostration.

Reference and grade

Grade
Sahih: agreed upon by al-Bukhari and Muslim
Narrator
Abdullah ibn Abbas

The hadith in Arabic نص الحديث

أَسْجُدَ عَلَى سَبْعَةِ أَعْظُمٍ عَلَى الْجَبْهَةِ ـ وَأَشَارَ بِيَدِهِ عَلَى أَنْفِهِ ـ وَالْيَدَيْنِ، وَالرُّكْبَتَيْنِ وَأَطْرَافِ الْقَدَمَيْنِ، وَلاَ نَكْفِتَ الثِّيَابَ وَالشَّعَرَ

Arabic text of Sahih al-Bukhari 812, as given on sunnah.com.