The Messenger of Allah ﷺ said: When any of you goes to relieve himself, he should take with him three stones to cleans himself, for they will be enough for him.
أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ إِذَا ذَهَبَ أَحَدُكُمْ إِلَى الْغَائِطِ فَلْيَذْهَبْ مَعَهُ بِثَلاَثَةِ أَحْجَارٍ يَسْتَطِيبُ بِهِنَّ فَإِنَّهَا تُجْزِئُ عَنْهُ