´It was narrated that Mu’aiqib said:` “The Messenger of Allah (ﷺ) said, concerning smoothing the pebbles during prayer: ‘If you must do that, then do it only once.’”
Hadith Referenceسنن ابن ماجه / كتاب إقامة الصلاة والسنة / 1026
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:بخاري ومسلم