It's the repetition of affirmations that leads to belief. And once that belief becomes a deep conviction, things begin to happen. - Muhammad Ali

It is narrated on the authority of Jabir that the Messenger of Allah said: I have been commanded that I should fight against people till they declare that there is no god but Allah, and when they profess it that there is no god but Allah, their blood and riches are guaranteed protection on my behalf except where it is justified by law, and their affairs rest with Allah, and then he (the Holy Prophet) recited (this verse of the Holy Qur'an):" Thou art not over them a warden" (lxxxviii, 22).

Abu Sa'id al-Khudri said, "Once when we were on a journey with the Prophet, a man came on a camel of his and began to look to his right and left. The Messenger of Allah, may Allah bless him and grant him peace, said, "Anyone who has a spare mount should prepare it for someone who does not have a mount to ride, and anyone who has extra provision should prepare it for someone who does not have any provision," and he mentioned the different categories of property until we thought that none of us had any right to anything in excess of our needs."

The prayer of a person is (in reality) a light in his heart, so whoever desires, can illuminate his heart (by means of prayers).