Trường Bộ Kinh (Digha Nikaya) 1:891
SUJATOAtha kho bhagavato cundassa kammāraputtassa bhattaṁ bhuttāvissa kharo ābādho uppajji, lohitapakkhandikā pabāḷhā vedanā vattanti māraṇantikā.
After the Buddha had eaten Cunda’s meal, he fell severely ill with bloody dysentery, struck by dreadful pains, close to death.