Surah Al-Baqarah (The Cow), Verse 78

وَمِنْهُمْ اُمِّیُّوْنَ لَا یَعْلَمُوْنَ الْكِتٰبَ اِلَّاۤ اَمَانِیَّ وَاِنْ هُمْ اِلَّا یَظُنُّوْنَ ۟

Wa minhum ummiyyoona laa ya'lamoonal kitaaba illaaa amaaniyya wa in hum illaa yazunnoon

“And there are among them illiterates, who know not the Book, but (see therein their own) desires, and they do nothing but conjecture.”

Quran 2:78 (Yusuf Ali Translation)