Tafsir of Ash-Shu`ara' 26:196

The Qur'an was mentioned in the Previous Scriptures Allah says:

وإنه لفي زبر اﻻإولين

And verily, it is in the Zubur of the former people. Allah says: this Qur'an was mentioned and referred to in the previous Scriptures that were left behind by their Prophets who foretold it in ancient times and more recently. Allah took a covenant from them that they would follow it, and the last of them stood and addressed his people with the good news of Ahmad:

وإذ قال عيسى ابن مريم يبنى إسرءيل إنى رسول الله إليكم مصدقا لما بين يدى من التوراة ومبشرا برسول يٲتى من بعدى اسمه أحمد

And (remember) when `Isa, son of Maryam, said: "O Children of Israel! I am the Messenger of Allah unto you, confirming the Tawrah before me, and giving glad tidings of a Messenger to come after me, whose name shall be Ahmad. (61:6) Zubur here refers to Books; Zubur is the plural of Az-Zabur, which is also the name used to refer to the Book given to Dawud. Allah says:

وكل شء فعلوه فى الزبر

And everything they have done is noted in the Az-Zubur. (54:52), meaning, it is recorded against them in the books of the angels. Then Allah says:

أولم يكن لهم آية أن يعلمه علماء بني إسراييل