(4) باب كَرَاهِيَةِ اسْتِقْبَالِ الْقِبْلَةِ عِنْدَ قَضَاءِ الْحَاجَةِ
Marwan al-Asfar said:
I saw Ibn Umar make his camel kneel down facing the qiblah, then he sat down urinating in its direction. So I said: AbuAbdurRahman, has this not been forbidden? He replied: Why not, that was forbidden only in open country; but when there is something between you and the qiblah that conceals you , then there is no harm.
Reference: Sunan Abi Dawud 11
In-book reference: Book 1, Hadith 11
English translation: Book 1, Hadith 11