Benefit: Who Was the First Prophet?
In the Name of Allāh, the Ever Merciful, the Bestower of Mercy
Answer: The first prophet to appear after the prevalence of shirk in the people was Nūḥ (ʿalayhi al-salām). Before that it was Ādam. Our father Ādam (ʿalayhi al-salām) was the first Prophet and Messenger. His progeny were upon Islām for ten generations, then shirk appeared within the people of Nūḥ, so Allāh sent Nūḥ, thus Nūḥ became the first messenger after the appearance of shirk.
Imām ʿAbd al-ʿAzīz ibn ʿAbdullāh ibn Bāz (raḥimahullāh)
Source: Ibn Bāz: The First Prophet of Islam
Translated by: Munīb al-Ṣumālī