Invocation
When the sick have renounced all hope of life
جعل النبي صلى الله عليه وسلم عند موته يدخل يديه في الماء فيمسح بهما وجههُ ويقول : لا إله إلا الله إن للموت لسكرات
There is none worthy of worship but Allah, surely death has agonies.
Al-Bukhari, cf. Al-Asqalani, Fathul-Bari 8/144. The Hadith also mention him
using the Siivak (tooth stick).