Islam has been sent to provide both worldly happiness and happiness in the hereafter. Peoples love for each other and their being in solidarity is one of the main conditions of the worldly happiness. A persons remembering and mentioning the name of Allah and overcoming his solitude, his solidarity with himself and then solidarity in the family within the framework of the duties and rights Islam defined and after that, solidarity with close and distant neighbors and afterwards, solidarity with the people in the neighborhood, town and region and then solidarity with all the believers in Islam They are the most eminent factors which sustain social peace and justice and even social security.
The word believer bears the meaning of the one who believes in the existence and oneness of Allah; it also means a confidential and trustable person. Therefore, a believer is a person who is loyal to his elders and loyal to his deeds, straightforward and trustable. In the first verses of the surah a