(7) باب قضاء الحاجة
and its Asl (original source) is in Abu Da'ud and At-Tirmidhi and Ibn Khuzaima graded it Sahih (sound) through Abu Huraira (rad) without mentioning the "stones".] (AR)
Reference (AR): Bulugh al-Maram 108 (AR)
In-book reference (AR): Book 1, Hadith 127 (AR)
English translation (AR): Book 1, Hadith 114 (AR)