Qur'an's past, future, and present guidance
Nahj al-Balāgha|Volume 1|Book 3|Chapter 313
٣١٣. وَقَالَ (عليه السلام): وَفِي الْقرْآنِ نَبَأُ مَا قَبْلَكُمْ، وَخَبَرُ مَا بَعْدَكُمْ، وَحُكْمُ مَا بَيْنَكُمْ.
313. Amīr al-mu’minīn, peace be upon him, said: The Qur’ān contains news about the past, foretellings about the future and commandments for the present.