"The Prophet ordered that one prostrate on seven bones and that he not gather his hair nor his garment."
Jami` at-Tirmidhi Book 2, Hadith 125
← Previous Hadith Allah's Messenger Saying: "When the worshipper prostrates with him: His face, his hands, his knees, and his feet."

Jami` at-Tirmidhi Book 2, Hadith 124 Next Hadith → "I was with my father at the plains of Namirah. I passed by a mount and saw Allah's Messenger standing in Salat." He said: "I was looking at the earthiness of his armpits when he prostrated." : "Whiteness."

Jami` at-Tirmidhi Book 2, Hadith 126