(7) باب النَّهْىِ عَنْ مَسْحِ الْحَصَى، فِي الصَّلاَةِ
It was narrated that Abu Dharr said:
"The Messenger of Allah (ﷺ) said: 'When any one of you stands in prayer, let him not smooth the pebbles, for he is facing Mercy.'" (FR)
Reference (FR): Sunan an-Nasa'i 1191 (FR)
In-book reference (FR): Book 13, Hadith 13 (FR)
English translation (FR): Vol. 2, Book 13, Hadith 1192 (FR)