Suuratul Baqarah Verse 104.
يَـٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوا۟ لَا تَقُولُوا۟ رَٰعِنَا وَقُولُوا۟ ٱنظُرْنَا وَٱسْمَعُوا۟ ۗ وَلِلْكَـٰفِرِينَ عَذَابٌ أَلِيمٌ﴿١٠٤
104. O you who believe! Say not (to the Messenger Peace be upon him ) Ra’ina but say Unzurna (Do make us understand) and hear. And for the disbelievers there is a painful torment.
TAFSIR IBN KATHIR
Ad-Dahhak said that Ibn `Abbas commented on the Ayah,
﴿لاَ تَقُولُواْ رَعِنَا﴾
(Say not (to the Messenger ) Ra`ina) “They used to say to the Prophet , Ar`ina samak (which is an insult).” Ibn Abu Hatim said that it was reported that Abu Al-`Aliyah, Abu Malik, Ar-Rabi` bin Anas, `Atiyah Al-`Awfi and Qatadah said similarly. Further, Mujahid said, “`Do not say Ra`ina’ means, `Do not dispute’.” Mujahid said in another narration, “Do not say, `We hear from you, and you hear from us.”’ Also, `Ata’ said, “Do not say,
(Ra`ina), which was a dialect that the Ansar used and which was forbidden from use by Allah.”