Abd al-Jabbar bin Wa'il (may Allah have mercy on him) narrates from his father that he said: I saw the Prophet (peace and blessings be upon him) praying, and I saw the mark of his (peace and blessings be upon him) nose, along with his (peace and blessings be upon him) forehead, in the soil of the place of prostration.
Hadith Referenceالمعجم الكبير للطبراني / باب الواو / 18287