"When any one of you goes to the Gha'it (toilet to defecate), let him take with him three stones and clean himself with them, for that will suffice him."  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ إِذَا ذَهَبَ أَحَدُكُمْ إِلَى الْغَائِطِ فَلْيَذْهَبْ مَعَهُ بِثَلاَثَةِ أَحْجَارٍ فَلْيَسْتَطِبْ بِهَا فَإِنَّهَا تَجْزِي عَنْهُ