(delivering the judgment of the Court): The subject matter of this appeal is an area of some 18,000 acres of timber-land in Pahang. The profits to be made were enormous - they were said to be $18,000,000. So when it was noised about that one Au Ah Wah had the rights to this area, his acquaintance was eagerly sought. Those who did not know him personally sought therefore introductions from those who knew and were prepared to pay considerable sums for the introduction.

The appellants and one Lin Wyen Pang who was one of the plaintiffs in the action but chose not to appeal from the dismissal of their claims introduced the respondent to Au Ah Wah. Arising from that introduction, an agreement was drawn up between the respondent and Au Ah Wah on March 20, 1973 (the March 20 agreement) for the transfer of all his rights in the timber-land to the respondent. We shall refer more fully to the terms of this agreement later. The obligation of the respondent to the introducers was incorporated in another agreement between them on March 31, 1973 (the March 31 agreement). On this agreement, the appellants and Lin Wyen Pang sued for the $900,000 promised to them therein