All the teachings of Islam are based on two basic principles – worship of God and service of men. Without putting both of these principles into practice, there can be no true fulfillment of one’s religious duties. In its followers, Islam inculcates the spirit of love and respect for all human beings. By serving human beings on the one hand they please their God, and on the other they achieve spiritual progress for themselves. According to a hadith, you should be merciful to people on earth and God on high will be merciful to you.