Volume One: 1:776: Ibn 'Abbas: The Prophet said, I have been ordered to prostrate on seven bones ...

Hadith 1:776

Narrated Ibn 'Abbas:

The Prophet said, "I have been ordered to prostrate on seven bones i.e. on the forehead along with the tip of the nose and the Prophet pointed towards his nose, both hands, both knees and the toes of both feet and not to gather the clothes or the hair."