Ash-Shu'araa • BN-TAFSEER-IBN-E-KASEER
﴿ وَإِنَّهُۥ لَفِى زُبُرِ ٱلْأَوَّلِينَ ﴾
“And, verily, [the essence of] this [revelation] is indeed found in the ancient books of divine wisdom [as well].”
Please check ayah 26:199 for complete tafsir.