in the visit of seventy of the Medinah disciples to Mohammed in Mecca.
They met him secretly in the mountains, by night, and made solemn,
binding vows of allegiance, in which they promised "to fight men of
all colour in order to defend the faith." It is highly probable that
at this meeting the prophet was invited to join them in Medinah, but
for the present he preferred his native town.

Somehow the story of the night meeting leaked out, with the result
that persecution was redoubled, and many of the less wealthy followers
were forced to flee to Medinah. They were there well received and
cared for, and were afterwards honoured by being designated the
"refugees," while those who received them were similarly honoured in
being named the "helpers." Thus the brotherhood of believers insisted
on by Mohammed began to assume practical form, and men of different
tribes were united in one common bond--a brotherhood so powerful that
its enemies in Mecca were filled with alarm. They had no longer to
deal with a man whose views could be despised. They were menaced by a
growing force that threatened to overwhelm them. Steps were taken to
overthrow the danger, and elaborate arrangements were made for the
assassination of the prophet. He somehow obtained news of the plot,
and escaped the would-be murderers, who came while he was supposed to
be in bed, by climbing through a window. Accompanied by the faithful
Abu Bakr and a few of his more intimate followers, he made his way to
one of the mountain caves, where he stayed until the immediate danger
had passed. Then the little company commenced the journey to Medinah,
a task so fraught with danger and hardship that Mohammed shrank from
it, in spite of the Meccan evil, and was compelled to attempt it only
by the pressure of his friends.

The facts concerning his entry into Medinah are obscure and uncertain,