The book "The Worldly Examination" deals with the subject of God's testing of man in this worldly life, explaining that everything that happens in the universe is by God's power and decree. The book explains that belief in fate and destiny is an essential part of the Islamic faith, and that the believer must accept what God has decreed for him, whether it is good or evil, and that man must be satisfied with God's decree and believe that everything that happens is for divine wisdom. This belief gives the believer reassurance and peace in facing the challenges of life.