Sincerity Described in the Qur'an

According to the Qur’an, neither working hard, nor growing weary, nor achieving respect or love from others is regarded as criteria of superiority. Rather, it is their belief in God, their good deeds done in order to gain His consent, and their goodwill, nurtured in the depths of their hearts, that are regarded as the criteria of superiority. Therefore, with this book, we are inviting all those sincere believers, who love God, wish to be friend with Him, and turn to Him, to search for the secret that leads to being among the successful.