Urwah narrates from Sayyidah Aishah (may Allah be pleased with her) that she said: During the illness in which he passed away, he (peace and blessings be upon him) used to say: "O Aishah! I still feel the pain of the food I ate at Khaybar. Now is the time when my aorta is being cut because of that poison."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الضحايا / 19717