Abu Dawud said: This is a munkar (rejected) tradition.
Abu Dawud said: Ayyub, the narrator of this tradition, is not (Ayyub) al-Sakhtiyani.
In-book : Book 28, Hadith 83
English translation : Book 27, Hadith 3809
28. 'Foods (Kitab Al-At''imah)'
باب الْوُضُوءِ بِسُؤْرِ الْكَلْبِ