Aaron dream meaning is explained below using 2 different sources. Each interpretation is shown with its source.

Interpretation 1 — Ibn Seerin

(The Prophet Aaron, the older brother of God’s prophet Moses, upon both ofthembe peace.)Seeingthe prophet Aaron (uwbp) in a dream meansexaltedness, leadership, or that one may become an Imam, a vice-regent of a great person, and perhaps suffer from many adversities because of it. Finally, he will triumph and attain his goals, or he may destroy a tyrant and an unjust ruler. Ifa warrior sees God’s prophet Moses or his brother the prophet Aaron, upon both of them be peace and blessings, in a dream, it means that he will be victorious and triumph over his enemy.
Source: Islamic Dream Interpretation Author: Ibn Seerin

Interpretation 2 — Margaret Hamilton

Enlightened leader
Source: Dream Dictionary Unlimited Author: Margaret Hamilton