Surah 22. Al-Hajj, Ayah 8

For "Book of Enlightenment" see iii. 184 and n. 490. I understand "knowledge" to mean here their human knowledge or intelligence, "guidance" to mean divine guidance, such as comes from Allah or prophets of Allah or a revelation from Allah, and the "Book of Enlightenment" to mean the fundamental guide to good conduct, the clear rules laid down in all Dispensations to help men to lead good lives. The "Book of Enlightenment" may mean a revealed Book in which case "Guidance" would refer to divine guidance through a prophet of Allah.