Surah Al-Furqan 25:35

وَلَقَدْ ءَاتَيْنَا مُوسَى ٱلْكِتَـٰبَ وَجَعَلْنَا مَعَهُۥٓ أَخَاهُ هَـٰرُونَ وَزِيرًا

And We had certainly given Moses the Scripture and appointed with him his brother Aaron as an assistant.

Translation: Saheeh International

Tafsir

And verily We gave Moses the Scripture the Torah and made Aaron his brother go with him as a minister an assistant.

Excerpt from Tafsir al-Jalalayn, commentary on 25:35, via Quran.com. The reader has the full commentary and 9 more tafsirs.