The Holy Quran commends and compens attention of mankind to observe and contemplate about the wonders of creation, their grandeur and splendour, their variety and diversity, and then to draw inferences as to who other than Allah could have caused their existence and subsequent maintenance. Among the creation of Heavens and Earth, while the former is decorated with Jannat, the garden of bliss, the latter is also provided with every type of vegetation and animals of all kinds (Sura Luqman, Ayat-10). Indeed when Aadm was asked to quit the garden of heaven where he and Eve were provided with plenty of things, they were directed to descend on earth where also they would be supplied with means of livelihood (edible vegetation such as fruit etc.).