Quran 2:181 from Surah Al-Baqara on Divine Marvels.
فَمَنۢ بَدَّلَهُۥ بَعۡدَ مَا سَمِعَهُۥ فَإِنَّمَآ إِثۡمُهُۥ عَلَى ٱلَّذِينَ يُبَدِّلُونَهُۥٓۚ إِنَّ ٱللَّهَ سَمِيعٌ عَلِيمٞ
English translation: Then whoever changes it after what he (has) heard [it] so only its sin (would be) on those who alter it Indeed Allah (is) All-Hearing All-Knowing
Transliteration: faman baddalahu ba'dama sami'ahu fa-innama ith'muhu ala alladhina yubaddilunahu inna al-laha sami'un alimun