The two concepts of life and death in the Islamic thought are not meant are known we to meet the two concepts of 'existence' and 'non-existence' as are known in the philosophies of and beliefs which deny the existence of the hereafter reward and punishment; therefore, the temporal world represents the first stage among the stages of the human existence and that death represents the end of this stage and meanwhile the beginning of a new stage of that existence, namely: Hereafter.
On this basis, death is not regarded a non-existence matter but rather an existing affair as confirmed in the following Almighty's verse: "He, meaning Allah, has created life and death to test which has done the best of deeds." 

The Stages of Life
Life in the Islamic concept is not restricted to the temporal life of the world which we are living now but also to the hereafter world which are expecting to witness in either can be classified into three parts- the life we are living now, the life of the hereafter which is either Paradise or Hell and the medial life between post death in the grave and the resurrection on Doomsday.
In a word, man's destination will be either a garden in Paradise or a ditch in Hell fire.
Allah, the Almighty, has made certain judgments for each house. The judgments which govern this temporal world are enacted on "bodies" only and "souls" are related to them and made the judgments that govern "souls" concern souls only and bodies are related to them and made the judgments that involve the house of immortality govern both "bodies" and "souls "together–namely: immortality forever, not mortality.
Building on the foregoing, immortality, is the eternal abode of the human being which is infinite and beyond limits. It is a term which is usually used to mean as: post death stage i.e. that man is born to stay and not to die and perish away by considering that death is not man's last destination but it is a transference from a state to another state-that is to say, from this life into another life.
This everlasting stay lies within these two well-known concepts: Paradise or Hell; either immortal in Paradise or in Hell according to what the results of the reckoning will show on Doomsday and such all heavenly religions say. …and Praise be to Allah-the Lord of all the worlds.