It is narrated from Sayyiduna Abu Dharr (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "When any one of you stands in prayer, indeed mercy is before him, so he should absolutely not move the pebbles."
Hadith Referenceمسند عبدالله بن مبارك / 55
Hadith Gradingمحدثین:ضعیف
Hadith Takhrij«الزهد، ابن مبارك : 418، مسند احمد (الفتح الرباني ): 4/83، سنن ابي داؤد : 945۔ محدث البانی نے اسے ’’ضعیف‘‘ کہا ہے۔»