صحیح ابن حبان
Ibn Hibban
كتاب الطهارة
Book of Purification
باب نواقض الوضوء - ذكر خبر ثالث يصرح بأن الكتف الذي أكله صلى الله عليه وسلم فصلى من غير إحداث وضوء كان ذلك كتف شاة لا كتف إبل
Chapter on Nullifiers of Ablution – Third report explicitly stating that the shoulder the Prophet (peace be upon him) ate and then prayed without renewing ablution was sheep shoulder, not camel shoulder
1 hadith
Hadith 1142
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 and then got up to perform prayer. He performed the prayer without renewing his ablution and without rinsing his mouth.