صحیح ابن حبان
Ibn Hibban
كتاب الطهارة
Book of Purification
ذكر البيان بأن الكتف الذي لم يتوضأ صلى الله عليه وسلم من أكله كان ذلك كتف شاة لا كتف إبل
Clarification that the shoulder from which the Prophet (peace be upon him) did not perform ablution was sheep shoulder, not camel shoulder
1 hadith
Hadith 1144
Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) narrates: The Prophet Muhammad (peace and blessings be upon him) ate the meat of a goat's shoulder, then he performed prayer and did not perform ablution again.