Ibn Mas'ud Radiyallahu 'Anhu says:
"Rasulullah Sallallahu 'Alayhi Wasallam loved the meat of the forequarter. Rasulullah Sallallahu 'Alayhi Wasallam was-given poison in the dhiraa portion of the meat. It is suspected that the Jews poisoned him'. (ID)
English reference (ID): Book 25, Hadith 159 (ID)
Arabic reference (ID): Book 26, Hadith 168 (ID)