Sayyiduna Ibn `Abbas (May Allah be pleased with them) reported:
The Messenger of Allah Sall-Allahu alayhi wa sallam said,
"He who visits a sick person who is not on the point of death
and supplicates seven times:
As-alul laahal azeem Rabbal arshil azeem An yashfiyaka
( I beg Allah the Almighty, the Owner of the Majestic Throne,
that He should cure you.),
Allah Ta'ala will certainly heal him from that sickness.''
[Abu Dawud and At-Tirmidhi].