Imam Ali (AS) said, In describing the Quran [he said]: It is the decisive word and not a jest. It is the articulator of the practice of justice and the enjoiner of virtue. It is the strong rope of Allah and the wise reminder. It is the trusted revelation of Allah and His strong rope. It is the spring of the hearts and the fountains of knowledge. It is the straight path. It is guidance for the one who follows it and an adornment for the one who beautifies himself with it. It is a protector [from sin] for the one who seeks protection by it and a firm rope for the one who holds on to it.