The conventional expression 'Taabi'oon' applies to the companions' followers who have met with them in person. It cannot be fulfilled merely by wishes, or by adhering to them in some matters while rejecting them in others. That is the bounty of Allaah which He bestows on whom He wills. Another land is dry with a solid bed that reserves water so that people can drink and irrigate with it. The third kind is a porous land that can neither retain water nor produce vegetation.
Rain is the cause of life for the body, while knowledge is the cause of life for the heart.
The first is a good land which accepts water and is ready to produce vegetation. When rain falls on it, it absorbs the water eagerly, giving rise to all sorts of pleasant vegetation. This is an example of one with a healthy, pure, and intelligent heart, which embraces knowledge, and is guided by its true intelligent nature, blossoming by that wisdom and true faith. Therefore, it is eager to take the knowledge, and ready to bear fruits because of its good nature. It is also like a rich business man who has experience in different trades and investments, which enables him to invest his wealth inthat which brings the best profit.