Muqatil said: the events by which Allah dealt with the earlier nations. One says, “So-and-so is knowledgeable of the Days of the Arabs,” meaning their battles and notable events. What is meant by the Days of Allah is the blessings and trials that occurred therein; the Days alone were mentioned in place of these because they were known to them. (1)

“Indeed, in that are signs for every steadfast and grateful person.” The term “steadfast” refers to one who is greatly patient, and “grateful” to one who gives abundant thanks. What is meant is every believer, for patience and gratitude are among the qualities of the believers.