The tradition of the Islamic religion outlines detailed actions regarding every aspect of life, which every Muslim must adhere to. These aspects include daily activities and rituals such as Namaaz, food etiquettes, respect for elders, marriage ceremonies, peaceful and friendly behavior towards neighbors, friends, relatives, and numerous aspects of daily life. thus we can say that the Koran is the code of conduct, a reference book for the Muslim community to lead a peaceful and content life while doing good deeds, for which they shall be rewarded in the life, hereafter, or after death.
Existentialism is not a religion; it is a movement which began in the early 18th century, by a group of scholars. The movement is atheistic as it does not believe in God as the supreme power governing the actions and occurrences of the world. Existentialism is a way of life which determines that the actions of a person are based on free will. It states that morals, value and ethics in the life of an individual necessitate form the individual's experiences of the world, and as such are based on personal perceptions. The movement is known to have begun by scholars like Soren Kierkegaard, who emphasizes on the occurrence of truth, rejecting the system of Hegelianism. He states that each individual has to pass through three stages in life.
The other prominent scholar of existentialism, Friedrich Nietzsche, believes in the concept of "nothingness". His famous quote, "God is Dead", stems from the fact that more and more people are becoming atheist and that Christianity cannot be a basis for values, ethics and morals. He criticizes Western culture stating that there is an absence of morals and values in the culture. he believes that the strong will for "freedom" is the most dominating emotion over all the other wills of religion, morals and ethical values. He firmly believes that there is no version of ultimate truth and that there will only be different perspectives of truth which will be based on different viewpoints of diverse individuals. This and several other theories are elucidated by different scholars of existentialism.
The occurrence of the numerous and diverse theories is in itself a contrasting feature between the existence in Islam and existentialism. On the one hand Islam has a fixed Holy book, the Koran, a fixed code of conduct, a fixed value system irrespective of age, gender, nation, language or any other disparity, while on the other hand, existentialism is a movement defined differently by diverse scholars. There is no consensus even regarding the definition of the term, which is perceived differently by all the scholars.
Islam firmly propagates the that the world will be destroyed on the last, final day which will be the day of judgment, and Allah will raise all the people, living or dead, in order to judge their deeds, good or bad.
Individuals who have committed good deeds and die, waiting in their graves for the final day will experience peace in the grave, whereas individuals who have committed bad deeds will begin their punishments in the grave. On the final day of judgment the good deeds and the bad deeds will be measured and accordingly individuals will be sent to heaven or hell. Heaven is a place of peace,