#1055
لا إله إلا الله إن للموت لسكرات
Transliteration
Lā ilāha illallāhinna li ‘lmawti la’sakarāt.
Translation
There is none worthy of worship but Allah, surely death has agonies.
Dua #1055•Al-Bukhari, cf. Al-Asqalani, Fathul-Bari 8/144. The Hadith also mention him using the Siivak (tooth stick).
When the sick have renounced all hope of life
Hisnul Muslim