(88) باب مَا جَاءَ فِي التَّجَافِي فِي السُّجُودِ
Ubaidallah bin Abdullah bin Arqam Al-Khuza'I narrated from his father (Abdullah bin Arqam), who said:
"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." [That is]: "Whiteness." (ES)
Reference (ES): Jami` at-Tirmidhi 274 (ES)
In-book reference (ES): Book 2, Hadith 126 (ES)
English translation (ES): Vol. 1, Book 2, Hadith 274 (ES)