‘Uqba b. ‘Āmir reported God’s messenger as saying, “What wonderful verses have been sent down to-night! The like of them has never been seen. They are ‘Say, I seek refuge in the Lord of the dawn’ and ‘Say, I seek refuge in the Lord of men.’” (Qur’ān, 113 and 114).
Anas said a man told God's messenger that he liked the sūra “Say, He is God, One,” to which he replied, “Your love of it will bring you into paradise.”
Tirmidhī transmitted it and Bukhārī transmitted something to the same effect.
‘Ā’isha said that every night when the Prophet went to his bed he joined his hands and breathed into them, reciting into them, ‘Say, He is God, One’; ‘Say, I seek refuge in the Lord of the dawn’; and ‘Say, I seek refuge in the Lord of men.’ Then he would wipe as much of his body as he could with his hands, beginning with his head, his face and the front of his body, doing that three times.
‘Ā’isha said that the Prophet sent a man in charge of an expedition and he would recite for his companions during their prayer, finishing with “Say, He is God, One.” When they returned they mentioned that to the Prophet, and he told them to ask him why he did that. They asked him and he replied, “Because it is a description of the Compassionate One, and I like to recite it.” Then the Prophet said, “Tell him that God loves him.”