﴿ وَإِنَّهُۥ لَفِى زُبُرِ ٱلْأَوَّلِينَ ﴾

“And, verily, [the essence of] this [revelation] is indeed found in the ancient books of divine wisdom [as well].”

And truly it the allusion to the Qur’ān that would be revealed to Muhammad (s) is in the Scriptures the Books of the ancients such as the Torah and the Gospel.