Abu Musa said:One day when I was with the Prophet he wanted to pass water, so he went to some soft ground at the foot of a wall and did it, after which he said, "When any of you wishes to pass water, he should look for [a place like this] to do it in.” Abu Dawud transmitted it.
Hadith Referenceمشكوة المصابيح / كتاب الطهارة / 345
Hadith Gradingالألبانی:ضَعِيف | زبیر علی زئی:إسناده ضعيف
Hadith Takhrij´تحقيق و تخريج: محدث العصر حافظ زبير على زئي رحمه الله` «إسناده ضعيف، رواه أبو داود (3) ٭ فيه شيخ: لم أعرفه .»