In his poem the pre - Islamic poet,
Imral - Qays has compared the dry dung of the antelope to
the pepper corns. He says: "There all about its yards, and
away in the dry hollows you may see the dung of antelopes
scattered like pepper corns". It is sufficient proof for the
availability of pepper in Arabia before Islam; and since
pepper was available in Kerala alone at that time, it is
clear that Arabs had contact with Kerala before Islam.
Goods were taken from the Indian coast to that of Yemen and from
there passing along the Red sea cost, to Syria and thence to
Europe either directly from Syrian coast or vie Egypt and
Alexandria. The route passing from Yemen to Syria, through Hijaz
has been referred to in the Quran as Imam Mubin (a manifest
roade). The winter and summer journeys mentioned in the Holy
Quran mean those made by the Quraysh on the highway called Imam
Mubin.

There were other reasons also for the
Arab contact with Kerala. Ceylon was known to the Arabs on
account of its pearl fisheries and trade in precious stones
from very early times. The Arab merchants had made
commercial establishments centuries before the rise of
Islam. This also led to the Arabs contact with Kerala.