While I was travelling with God's messenger between *al-Juhfa and al-Abwa’ a wind and intense darkness enveloped us, whereupon God’s messenger began to seek refuge in God, reciting “I seek refuge in the Lord of the dawn” and “I seek refuge in the Lord of men.”(Qur’ān, 113 &114) He then said, “Use them, ‘Uqba, when seeking refuge in God, for no one can use anything to compare with them for the purpose.”
*Al Juhfa- a village about 82 miles from Mecca. Al Abwa’- a village between twenty and thirty miles nearer Medina than al-Juhfa.
Farwa b. Naufal quoted his father as saying that he had asked God's messenger to teach him something to say when he went to bed, and was told to recite, “Say, O infidels”, for it is a declaration of freedom from polytheism.
We went out one rainy and intensely dark night to look for God’s messenger, and when we caught up on him he said to me, “Say.” I asked him what I was to say, and he replied, “If you recite ‘Say, He is God, One’ and al-Mu'awidhatān (The last 3 sūras of the Qur’ān) three times morning and evening, they will serve you for every purpose.”
The Prophet, on hearing a man reciting “Say, He is God, One” remarked, “It is certain.” I asked him what was certain, and he replied that it was paradise.