Answer: Muhammed believed that the angel Gabriel spoke to him in the cave.
In the Cave of Hira, Muhammad was confronted by Jibraeel,who spoke to him, as per the will of Allah.
The archangel, Jibraeel, appeared before Muhammad in the Cave of Hira.
The name of this cave is HIRA.
Gari' hira{the cave of hira}
The cave Hira
The mountain upon which the first revelation took place was Jabal al-Nour however, to be more specific it took place in the Cave of Hira.
in Ghar Hira. Ghar=cave in Arabic
Hazrat Muhammad SAW met with Hazrat Gabriel (Jibraiel) in the Cave of Hira.
Gabriel is the messenger of God, usually of revelational information.
The night when Muhammad received his first revelation is known as the Night of Ordainment. This happened when Muhammad (peace be upon him) was in the cave of Hira.
Hazrat Muhammad (SAW) used to spend most of his time in cave Hira in meditation when he grew forty. Almighty Allah sent Hazrat Jibraiel. Thus he was called by God (Allah) at the age of forty in the Cave of Hira, situated a few miles away from Mecca.
Mountain of Light (Jabal al noor) in Mecca inside a cave that called Hira' Cave and it was not a vision. it was a revelation.
His wife, Hazrat Khudeeja RAU greeted him and consoled him when he came back from the Cave Hira and told her what had happened to him there.