وَعَنْ أَبِي هُرَيْرَةَ رَضِيَ اللَّهُ عَنْهُ
قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «مَنْ تَوَضَّأَ فَأَحْسَنَ الْوُضُوءَ ثُمَّ أَتَى الْجُمُعَةَ فَاسْتَمَعَ وَأَنْصَتَ غُفِرَ لَهُ مَا بَيْنَهُ وَبَيْنَ الْجُمُعَةِ وَزِيَادَةُ ثَلَاثَةِ أَيَّامٍ وَمَنْ مَسَّ الْحَصَى فقد لَغَا»
He reported God’s Messenger as saying, “If anyone performs ablution, doing it well, then comes to the Friday prayer, listens and keeps silent, his sins between that time and the next Friday will be forgiven him, with three days extra; but he who touches pebbles has caused an interruption (lagha).”* * This refers to little stones which one removes while engaged in salat.
While Bukhari, al-‘amal fis salat, 8, gives a tradition which allows smoothing the ground once only, this tradition treats the matter as unsuitable. Regarding this tradition Lisan al-‘Arab, 22:118, says that lagha means ‘he has spoken’, or ‘deviated from what is right,’ or ‘has been frustrated’, adding that the first is the basic meaning.
The idea is evidently that the one who makes a sound by removing small stones during the prayer has hindered someone from hearing. Cf. Qur’an, 41:26.’’