The ProphetsNo. 15
هَارُون
The brother of Musa, granted to him as a prophet out of Allah's mercy.
Harun was the brother of Musa. Musa asked Allah to make Harun his helper from his family and to strengthen him through him (20:29-32), and Allah granted his request (20:36). Both were sent to Pharaoh together, as messengers of his Lord (20:47). islamweb's fatwa states that Harun was both a prophet and a messenger, and that on this there is no disagreement.
When Musa went to the appointed meeting, he left Harun in charge of their people (7:142). In his absence they took to worshipping the calf.
وَوَهَبْنَا لَهُۥ مِن رَّحْمَتِنَآ أَخَاهُ هَـٰرُونَ نَبِيًّا ٥٣
And We gave him out of Our mercy his brother Aaron as a prophet.
Saheeh International · QuranEnc v1.1.2
53. And We granted him his brother Hârûn (Aaron), (also) a Prophet, out of Our Mercy.
قَالَ قَدْ أُوتِيتَ سُؤْلَكَ يَـٰمُوسَىٰ ٣٦
[Allāh] said, "You have been granted your request, O Moses.
Saheeh International · QuranEnc v1.1.2
36. (Allâh) said: "You are granted your request, O Mûsâ (Moses)!
فَأْتِيَاهُ فَقُولَآ إِنَّا رَسُولَا رَبِّكَ فَأَرْسِلْ مَعَنَا بَنِىٓ إِسْرَٰٓءِيلَ وَلَا تُعَذِّبْهُمْ ۖ قَدْ جِئْنَـٰكَ بِـَٔايَةٍ مِّن رَّبِّكَ ۖ وَٱلسَّلَـٰمُ عَلَىٰ مَنِ ٱتَّبَعَ ٱلْهُدَىٰٓ ٤٧
So go to him and say, 'Indeed, we are messengers of your Lord, so send with us the Children of Israel and do not torment them. We have come to you with a sign from your Lord. And peace[838] will be upon he who follows the guidance.
[838] i.e., safety and security from Allāh's punishment.
Saheeh International · QuranEnc v1.1.2
47. "So go you both to him, and say: ‘Verily, we are Messengers of your Lord, so let the Children of Israel go with us, and torment them not; indeed, we have come with a sign from your Lord! And peace will be upon him who follows the guidance!