صحیح ابن حبان
Ibn Hibban
كتاب الطهارة
Book of Purification
باب نواقض الوضوء - ذكر خبر ثان يصرح بأن الكتف الذي أكله المصطفى صلى الله عليه وسلم ولم يتوضأ منه كان ذلك كتف شاة لا كتف إبل
Chapter on Nullifiers of Ablution – Second report explicitly stating that the shoulder the Prophet (peace be upon him) ate without performing ablution was sheep shoulder, not camel shoulder
1 hadith
Hadith 1141
Ja'far bin Amr bin Umayyah al-Damri narrates from his father: I saw the Prophet Muhammad (peace be upon him) eat the meat from the upper part of a goat's shoulder, then he was called for prayer. He got up, put the knife aside, and performed the prayer without performing ablution again. Ibn Shabab narrates: Ali bin Abdullah bin Abbas (may Allah be pleased with them both) narrated to me from his father, from the Prophet Muhammad (peace be upon him), a narration similar to this.