Abu Dawud said : The name of Abu KAthir al-Ubari is Yazid b. "Abd al-Rahman b. Ghufailat al-Sahmi. Some said: Uzainah. What is correct is Ghufailah.
In-book : Book 27, Hadith 10
English translation : Book 26, Hadith 3670
27. Drinks (Kitab Al-Ashribah)
باب كَرَاهِيَةِ اسْتِقْبَالِ الْقِبْلَةِ عِنْدَ قَضَاءِ الْحَاجَةِ