When visiting the sick one should say the following

When visiting the sick one should say the following:

لاَ بَاسَ طَهُوْرٌ اِنْ شَاءَ اللّٰهُ

Do not become worried as this sickness will be a means of cleaning you from your sins, if Allah Ta’ala wishes. 

Reference: 

  • Beautiful Sunnats