"My two eyes saw the traces of water and mud on the forehead and nose of the Messenger of Allah (ﷺ), from his praying Qiyam on the night of the twenty-first."
Sunan an-Nasa'i Book 12, Hadith 67
← Previous Hadith He heard the Messenger of Allah (ﷺ) say: "When a person prostrates, seven parts of his body prostrate: his face, his two palms, his two knees and his two feet."

Sunan an-Nasa'i Book 12, Hadith 66 Next Hadith → The Messenger of Allah (ﷺ) said: "I have been commanded to prostrate on seven, and not to tuck up my hair nor my garment: the forehead, the nose, the hands, the knees and the feet."

Sunan an-Nasa'i Book 12, Hadith 68