It is not righteousness that you turn your faces towards the East and the West, but righteousness is this that one should believe in Allah and the last day and the angels and the Book and the prophets, and give away wealth out of love for Him to the near of kin and the orphans and the needy and the wayfarer and the beggars and for (the emancipation of) the captives, and keep up prayer and pay the poor-rate; and the performers of their promise when they make a promise, and the patient in distress and affliction and in time of conflicts-- these are they who are true (to themselves) and these are they who guard (against evil).

The believers are only those who believe in Allah and His Messenger then they doubt not and struggle hard with their wealth and their lives in the way of Allah; they are the truthful ones.