But their description in the Injeel ( Gospel ) is like a ( sown ) seed which sends forth its shoot , then makes it strong , it then becomes thick , and it stands straight on its stem , delighting the sowers that He may enrage the disbelievers with them . Allah has promised those among them who believe ( i.e. all those who follow Islamic Monotheism , the religion of Prophet Muhammad SAW till the Day of Resurrection ) and do righteous good deeds , forgiveness and a mighty reward ( i.e. Paradise ) .