When visiting the sick

لا بأْسَ طَهـورٌ إِنْ شـاءَ الله

Lā ba'sa ṭahūrun in shā Allāh.

Do not worry, it will be a purification (for you), Allah willing.

Al-Bukhari, cf. Al-Asqalani Fathul-Bari 10/118.