The Kingdom - 67:29          
          
                        "Say, "He is the Most Merciful; in Him we believe and in Him we trust. You will know in the future who is indeed in complete error."          
        
        
          The most important criterion for believing in Allah:        
      
                  
                    
                      The Cattle/6:82                    
                  
                  
                                        Those who believe and do not mix their faith with wrongdoing, they deserve security and they have found the truth.                  
                
                
              
                  
                    
                      The Companies/39:65                    
                  
                  
                                        It has been revealed to you and those before you that if you associate partners, all that you do will be in vain and you will be of the losers.                  
                
                
              
                  
                    
                      Luqman/31:13                    
                  
                  
                                        "When Lokman advised his son, he said: "My dear son, do not associate partners with Allah; surely shirk (associating partners with God) is a great wrong."