Surah Aal-i-Imraan, Verse 78
وَإِنَّ مِنْهُمْ لَفَرِيقًۭا يَلْوُۥنَ أَلْسِنَتَهُم بِٱلْكِتَٰبِ لِتَحْسَبُوهُ مِنَ ٱلْكِتَٰبِ وَمَا هُوَ مِنَ ٱلْكِتَٰبِ وَيَقُولُونَ هُوَ مِنْ عِندِ ٱللَّهِ وَمَا هُوَ مِنْ عِندِ ٱللَّهِ وَيَقُولُونَ عَلَى ٱللَّهِ ٱلْكَذِبَ وَهُمْ يَعْلَمُونَ
Translation — Sahih International
And indeed, there is among them a party who alter the Scripture with their tongues so you may think it is from the Scripture, but it is not from the Scripture. And they say, "This is from Allah," but it is not from Allah. And they speak untruth about Allah while they know.
Source
Kur'an-ı Kerim, Âl-i İmrân Suresi 3:78
https://kuran.diyanet.gov.tr/mushaf/kuran-meal-2/3-suresi-78-ayet