Although worldly existence is a lower and defective realm of being...
Although worldly existence is a lower and defective realm of being, but since it is a nursery for the training of lofty souls and a school for acquiring higher spiritual stations, it is a field for cultivating the Hereafter. In this sense it is the most sublime of the realms of being and the most profitable of worlds for the lovers of God and the wayfarers of the path of the Hereafter.
And were it not for this terrestrial realm of matter, the domain of physical and spiritual substantial transformation and change, and if God Almighty had not made it a realm of transition and annihilation, not a single imperfect soul would have attained its promised state of perfection nor would it have been able to reach the realm of permanence and stability, nor the embodiments of imperfection would have been able to enter the Kingdom of God.
Accordingly, that which is mentioned in the Quran and tradition regarding the disapproval of ‘the world’ does not actually apply to the world itself, but is meant to refer to absorption in it and love and attachment for it. This shows that man has two ‘worlds’ one of them is condemned, while the other is extolled and praised.
The world, which is approved, is that which one acquires in this earthly abode, this school, and this marketplace, where higher stations and lasting spiritual merits are exchanged for transitory goods and where arrangements are made for the abiding abode.
It is the shrine of worship for those who love Allah, the house of prayer for His angels, the place where the revelations of Allah descend, and the marketplace for those devoted to Him.