Who is Sheik Ahmed Taji from The Haj and what is their importance?

Sheik Ahmed Taji is a conference delegate to the Great Democratic Unity Conference in Amman. He was the sheik of a semi-nomadic tribe near Eilat. His tribe evacuated the area at the beginning of the war and moved to Hebron. He was living at the Hebron Camp. Sheik Taji approached Ibrahim at the conference and told him they must meet after the conference. He gave him a black stone talisman to send with a note to indicate the meeting. When the signal comes from Ibrahim, Taji, Ibrahim and Maan meet and make plans for the convention in Bethlehem, where the three are named as delegates to the conference in Zurich. Taji succumbs to bribery and accepts a position with the Saudi government and leaves the conference.