We see in the world that the more needy and helpless a creature is the better it is nourished. For example during the first stages of life a human being is nourished in the best way and with no effort before and immediately after his birth. As he becomes an adult aware of his personal strength and will power he begins to meet his needs with great difficulties in order to make his living.
Similarly animals like wolves and foxes which rely on their power and cunning are barely nourished despite much effort and toil while fruit-worms live on the best of food and quite easily. Plants a kind of creatures unable to move take their food ready without any effort. All these examples together with many others clearly show that there is One absolutely Merciful and Munificent. Who has rule over the whole of creatures and sustain or maintain them.