Narrated 'Aisha: Whenever Allah's Apostle (obuh) became ill, he used to recite Al-Muawidhatan...

Narrated 'Aisha: Whenever Allah's Apostle (obuh) became ill, he used to recite Al-Muawidhatan (i.e. the last two Suras of the Qur'an) and then blow his breath and passed his hand over himself. When he had his fatal illness, I started reciting Al-Muawidhatan and blowing my breath over him as he used to do, and then I rubbed the hand of the Prophet over his body. Bukhari (Book #59, Hadith #714)