The first person who recognized signs of Prophethood on Muhammad (SAW) was a

Explanation

When Muhammad (ﷺ) was about 12 years old, he accompanied his uncle Abu Talib on a trade journey to Syria. In a place called Busra a very interesting incident took place, which caused Abu Talib to return Muhammad to Makkah.On their trade journey they met a Christian monk by the name of Bahira, who lived a simple life in a monastery which contained ancient sacred texts that were not available anywhere else. Bahira had very simple provisions and lived a harsh life, surviving on the bare essentials. His diet was very simple and the clothes he wore were also coarse and well worn. He was looking outside and caught sight of a caravan approaching. His residence was on the main caravan route and he regularly saw caravans passing by, carrying different goods destined to be sold in the great markets of Syria.He noticed that this caravan was different; there was something special about it. He decided to invite the people to a meal and find out more. Bahira sent a message to the caravan that his hospitality was extended to all the members of the caravan. The caravan traders accepted the invitation and arrived at the monk's place.