Al-Furqan 25:35

وَلَقَدْ ءَاتَيْنَا مُوسَى ٱلْكِتَـٰبَ وَجَعَلْنَا مَعَهُۥٓ أَخَاهُ هَـٰرُونَ وَزِيرًا

Walaqad ātaynā mūsā l-kitāba wajaʿalnā maʿahu akhāhu hārūna wazīran

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