Anas Radiyallahu 'Ahu reports that when Rasulullah Sallallahu 'Alayhi Wasallam was experiencing severe illness, Faatimah Radiyallahu 'Anha said:
"Haai, the sickness of my father". Nabi Sallallahu 'Alayhi Wasallam thereupon said: "After this day your father will not experience any difficulties. Verily that inevitable thing has descended on your father today i.e. death-which till the day of qiyaamah will not be averted by anyone". (FR)
English reference (FR): Book 53, Hadith 380 (FR)
Arabic reference (FR): Book 54, Hadith 397 (FR)