And the explanation of the evidence that the Noble Prophet (peace be upon him) permitted touching and arranging pebbles once during the prayer.
Imam Abu Bakr, may Allah have mercy on him, says that I have previously narrated this hadith from Sayyiduna Mu'ayqib, may Allah be pleased with him, from the Prophet Muhammad, peace and blessings be upon him, that he said: "If you must straighten the pebbles, then do it only once."
Hadith Referenceصحيح ابن خزيمه / جماع أبواب الأفعال المكروهة فى الصلاة التى قد نهي عنها المصلي / 915