بُلُوغُ الْمَرَامِ
Bulugh al-Maram 241
The Book of Prayer
وَعَنْ أَبِي ذَرٍّ - رضى الله عنه - [1] قَالَ : قَالَ رَسُولُ اَللَّهِ - صلى الله عليه وسلم -{ إِذَا قَامَ أَحَدُكُمْ فِي اَلصَّلَاةِ فَلَا يَمْسَحِ اَلْحَصَى , فَإِنَّ اَلرَّحْمَةَ تُوَاجِهُهُ } رَوَاهُ اَلْخَمْسَةُ بِإِسْنَادٍ صَحِيحٍ [2]
Narrated Abu Dhar (RA): Allah's Messenger (ﷺ) said: "When one of you is praying he must not remove pebbles (from his face) for the mercy is facing him." [Reported by al-Khamsah with a Sahih (authentic) chain].
Sunnah.com reference: Book 2, Hadith 109