What are the observations of Monk Nestor of about young Muhammed? What did he say to about a young person he saw? The observations of Monk Nestor…
After a long journey, the caravan eventually made a stopover at Busra, part of Syria. Muhammad -upon him blessings and peace- retreated under an olive tree in the vicinity of the monastery of Monk Nestor. Noticing the man taking a respite in the shade, and already having met Maysara before, the Monk asked him:
“Maysara! Who is the man under the shade?”
“He is from the tribe of Quraysh”, Maysara answered.
“Has he any redness in his eyes?” the Monk then asked.
“Yes, he has.”
“Then he has got to be the Last Prophet!” exclaimed Nestor. “If only I could live to see the beginning of his prophethood and help him!” (Ibn Saad, I, 130-156; Ibn Kathir, al-Bidâya, II, 297-298)
Soon after, the caravan left Busra for Mecca. On the way back, Maysara witnessed two angels shading Muhammad -upon him blessings and peace- at times when the heat of the desert soared to unbearable heights. The journey proved to be a profitable one for the entire caravan.
 Ibn Saad, I, 130, 156-157.
Source: Osman Nuri Topbaş, The Prophet Muhammed Mustafa the Elect, Erkam Publications