As he was dying, the Prophet (ﷺ) dipped his hands in water and wiped his face saying: Lā ilāha illallāh inna li ‘lmawti la’sakarāt. There is none worthy of worship but Allah, surely death has agonies. Reference: Al-Bukhari, cf. Al-Asqalani, Fathul-Bari 8/144. The Hadith also mention him using the Siivak (tooth stick).