In Book Two, Section 82 of the Masnavi, Rumi explains the spiritual necessity of trials and examinations to distinguish good from evil. He uses the metaphor of the changing seasons—specifically the harshness of autumn and winter—to illustrate how nature undergoes testing, while spring and summer ultimately bring forth the life and true qualities that endure. Furthermore, he describes how the earth is tested to reveal whether it conceals precious gems or ordinary stones. Through these natural analogies, Rumi conveys that divine trials serve to strip away superficial appearances, forcing both nature and human beings to manifest their true, hidden essence.