He is the brother of Moses PBUH
(And my brother Aaron is more eloquent than I, so send him with me as a helper to support what I say, for I truly fear they may reject me.”) (Al-Qassas 28:34)
(and grant me a helper from my family* Aaron, my brother.) (Ta-Ha 20:29-30)
هو أخو موسى عليه السلام.
وَأَخِي هَارُونُ هُوَ أَفْصَحُ مِنِّي لِسَانًا فَأَرْسِلْهُ مَعِيَ رِدْءًا يُصَدِّقُنِي إِنِّي أَخَافُ أَن يُكَذِّبُونِ ) ) القصص 28: 34 )
( وَاجْعَل لِّي وَزِيرًا مِّنْ أَهْلِي * هَارُونَ أَخِي ) )
طه 20 :29 – 30