Sahih al-Bukhari, Volume 5, Book 59, Hadith 551 (USC-MSA) ⓘ
Narrated Abu Huraira: When Khaibar was conquered, a (cooked) sheep containing poison, was given as a present to Allah's Apostle.
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ يُوسُفَ، حَدَّثَنَا اللَّيْثُ، حَدَّثَنِي سَعِيدٌ، عَنْ أَبِي هُرَيْرَةَ ـ رضى الله عنه ـ قَالَ لَمَّا فُتِحَتْ خَيْبَرُ أُهْدِيَتْ لِرَسُولِ اللَّهِ صلى الله عليه وسلم شَاةٌ فِيهَا سُمٌّ.
also referenced under: Book 64, Hadith 284 (In-Book) & Hadith 4249 (DarusSalam)