[20].Surah Taha [Tâ-Hâ]: Ayat 68-70

Ayat 68. We (Allah) said: "Fear not! Surely, you will have the upper hand.

Ayat 69. "And throw that which is in your right hand! It will swallow up that which they have made. That which they have made is only a magician's trick, and the magician will never be successful, no matter whatever amount (of skill) he may attain."

Ayat 70. So the magicians fell down prostrate. They said: "We believe in the Lord of Harun (Aaron) and Mûsa (Moses)." 

[Tafseer] The meaning may be either that falsehood and trickery may have their day, but they cannot win everywhere, especially in the presence of Truth, or that trickery and magic must come to an evil end. 

Hazrat Abu Sa`id Al-Khudri and Abu Hurairah (May Allah be pleased with them) reported: The Messenger of Allah (PBUH) said, "If a person says: `La ilaha illallahu wallahu Akbar (There is no true god except Allah and Allah is Greatest)', his Rubb responds to him and affirms: `(Yes!) There is no true god except I, and I am the Greatest.' When he says: `La ilaha illallahu Wahdahu la sharika Lahu (There is no true god except Allah, the One, He has no partner).' Allah (SWT) affirms: `(Yes!) There is no true god except I. I have no partner.' When he says: `La ilaha illallahu Lahul mulku wa Lahul-hamdu (the sovereignty belongs to Him and all the praise is due to Him).' He (SWT) affirms: `(Yes!) There is no true god except I, Mine is the praise and to Me belongs the sovereignty.' When he says: `La ilaha illallahu wa la hawla wa la quwwata illa Billah (There is no true god except Allah, and there is no might and power but with Allah).' He (SWT) affirms: `(Yes!) There is no true god except I, and there is no might and power but with Me.''' The Messenger of Allah (PBUH) added, "He who recites this during his illness and dies, will not be touched by the Fire (Hell).''

[At-Tirmidhi Hadith # 3430].  

Lesson : as mentioned above in Surah Taha Ayat 70."They said: "We believe in the Lord" There is always a great certainty that Allah will respond to a supplication which springs from a sincere, veracious heart. One should, therefore, pray for a patient with full conviction and reassurance of heart. Moreover, the Prophet's prayers have special effect and grace and therefore their original wordings should be uttered.